# The 45 largest consulting firms in Singapore Tamtam tracks 45 consulting firms headquartered in Singapore. This list ranks all of them by number of employees on LinkedIn, led by Quest Global, TDCX and International SOS. Their median headcount is 539. Half of them were founded in 2006 or later. The most common headquarters are Singapore (43). These Singapore-based consulting firms are predominantly large companies, many with a global presence, offering a range of specialized services. Quest Global provides engineering solutions, TDCX focuses on digital customer experience, International SOS offers health and security risk management, and Khatib & Alami is a multidisciplinary design consultancy. SJ Group works on urban spaces, while PERSOL APAC specializes in HR solutions. A notable pattern among these firms is their strong focus on technology and digital transformation. Companies like Mindsprint, NTT DATA Asia Pacific, and ADA highlight their use of AI, cloud development, and data analytics to address complex business challenges across various industries. πŸ‡ΈπŸ‡¬ Singapore Β· 45 companies Β· Updated Nov 12, 2026 | # | Company | Industry | Headquarters | Employees | Founded | |---|---|---|---|---|---| | 1 | [Quest Global](https://www.tamtam.ai/c/quest-global) (questglobal.com)
Provides comprehensive engineering solutions across multiple industries, leveraging global expertise and digital technologies to solve complex challenges. | Engineering Services | πŸ‡ΈπŸ‡¬ Singapore | 21,161 | | | 2 | [TDCX](https://www.tamtam.ai/c/tdcx) (tdcx.com)
Provides digital customer experience solutions using technology and human intelligence to help brands acquire customers and build loyalty globally. | Outsourcing and Offshoring Consulting | πŸ‡ΈπŸ‡¬ Singapore | 16,816 | | | 3 | [International SOS](https://www.tamtam.ai/c/international-sos) (internationalsos.com)
Customized health and security risk management solutions, immediate crisis response, compliance support, and wellbeing services for global workforce protection. | Hospitals and Health Care | πŸ‡ΈπŸ‡¬ Singapore | 12,706 | 1985 | | 4 | [Khatib & Alami](https://www.tamtam.ai/c/khatib-and-alami) (khatibalami.com)
A multidisciplinary design consultancy focused on professional excellence, sustainability, and innovation in delivering projects across various regions worldwide | Design Services | πŸ‡ΈπŸ‡¬ Downtown | 7,600 | 1964 | | 5 | [SJ Group](https://www.tamtam.ai/c/sj-group) (sjgroup.com)
Designing and delivering quality housing, infrastructure, and sustainable urban spaces to create thriving communities and businesses worldwide. | Professional Services | πŸ‡ΈπŸ‡¬ Singapore | 7,158 | 2015 | | 6 | [PERSOL APAC](https://www.tamtam.ai/c/persol-apac) (persolkelly.com)
Leading provider of integrated staffing and HR solutions across Asia-Pacific, combining local expertise with technology to support workforce needs. | Human Resources Services | πŸ‡ΈπŸ‡¬ Singapore | 4,104 | | | 7 | [KPMG Singapore](https://www.tamtam.ai/c/kpmg-singapore) (kpmg.com.sg)
Global network of independent firms providing audit, tax, and advisory services with legal separation and local responsibility in 142 countries. | Business Consulting and Services | πŸ‡ΈπŸ‡¬ Singapore | 3,310 | | | 8 | [Mindsprint](https://www.tamtam.ai/c/mindsprint) (mindsprint.com)
Providing AI-driven technology solutions including digital transformation, cloud development, cybersecurity, and automation for diverse global industries. | IT Services and IT Consulting | πŸ‡ΈπŸ‡¬ Singapore | 3,135 | | | 9 | [PwC Singapore](https://www.tamtam.ai/c/pwc-singapore) (pwc.com)
Building trust in society, solving important problems, delivering quality assurance, advisory, and tax services across 152 countries with nearly 328,000 people. | Accounting | πŸ‡ΈπŸ‡¬ Singapore | 2,595 | | | 10 | [Meinhardt Group](https://www.tamtam.ai/c/meinhardt-group) (meinhardtgroup.com)
Asian-based engineering company with global reach, providing innovative and sustainable solutions for complex projects in various industries worldwide | Civil Engineering | πŸ‡ΈπŸ‡¬ Singapore | 2,540 | 1955 | | 11 | [ADA](https://www.tamtam.ai/c/ada) (adaglobal.com)
Helping clients leverage data and AI to drive digital transformation, enhance marketing, and solve business challenges with strategic insights. | Business Consulting and Services | πŸ‡ΈπŸ‡¬ Singapore | 1,942 | 2018 | | 12 | [NTT DATA Asia Pacific](https://www.tamtam.ai/c/ntt-data-asia-pacific) (nttdata.com)
Global business and technology leader providing AI, digital infrastructure, cloud, security, and consulting services to help organizations transition sustainably into digital futures. | IT Services and IT Consulting | πŸ‡ΈπŸ‡¬ Singapore | 1,866 | | | 13 | [Accenture Southeast Asia](https://www.tamtam.ai/c/accenture-southeast-asia) (accenture.com)
A global professional services company helping businesses and governments achieve digital transformation, optimize operations, drive revenue growth, and enhance citizen services | Business Consulting and Services | πŸ‡ΈπŸ‡¬ Singapore | 1,549 | | | 14 | [IQVIA Asia Pacific](https://www.tamtam.ai/c/iqvia-asia-pacific) (iqvia.com)
Provider of advanced analytics, technology solutions, and clinical research services to life sciences companies for improved health outcomes. | Hospitals and Health Care | πŸ‡ΈπŸ‡¬ Singapore | 1,457 | 1954 | | 15 | [PwC South East Asia Consulting](https://www.tamtam.ai/c/pwc-south-east-asia-consulting) (pwc.com)
Consulting professionals across Southeast Asia combining people and technology to solve business challenges, unlock value, and build societal trust. | Business Consulting and Services | πŸ‡ΈπŸ‡¬ Singapore | 1,169 | | | 16 | [Hytech](https://www.tamtam.ai/c/hytech-singapore) (hytechc.com)
Leading consultancy driving digital transformation for fintech businesses Specializing in strategic consulting, technology solutions, and data-driven services for global organizations | IT Services and IT Consulting | πŸ‡ΈπŸ‡¬ Singapore | 1,084 | 2022 | | 17 | [InCorp Global](https://www.tamtam.ai/c/incorp-global) (incorp.asia)
Experts in business incorporation, secretarial & compliance, accounting & finance outsourcing, PEO, HR payroll, bookkeeping, taxation, immigration, VCC, family offices, business advisory, ESG, and risk assurance. | Business Consulting and Services | πŸ‡ΈπŸ‡¬ Singapore | 988 | 2015 | | 18 | [Thakral One](https://www.tamtam.ai/c/thakral-one) (thakralone.com)
Delivers technology consulting, bespoke software solutions, data analytics, and cloud adoption strategies to financial services, telecommunications, healthcare, and government sectors across Asia. | IT Services and IT Consulting | πŸ‡ΈπŸ‡¬ Singapore | 747 | 1997 | | 19 | [Apar Technologies](https://www.tamtam.ai/c/apar-technologies) (apartechnologies.com)
Global IT services company providing AI-powered automation, data analytics, cloud, CRM, and custom application development for business transformation. | IT Services and IT Consulting | πŸ‡ΈπŸ‡¬ Singapore | 678 | 2006 | | 20 | [RSM - Singapore](https://www.tamtam.ai/c/rsm-singapore) (rsm.global)
Providing audit, tax, advisory, and business support services to growing and international businesses, focusing on profit improvement and compliance. | Professional Services | πŸ‡ΈπŸ‡¬ Singapore | 644 | 1985 | | 21 | [GreyB](https://www.tamtam.ai/c/greyb) (greyb.com)
Custom research on patents, scientific articles, and market trends with expert human analysis to support competitive business decisions. | Business Consulting and Services | πŸ‡ΈπŸ‡¬ Singapore | 614 | 2007 | | 22 | [Dalberg](https://www.tamtam.ai/c/dalberg) (dalberg.com)
Global advisory group providing innovative investment, research, analytics, design services to governments, companies, and communities for sustainable impact. | Business Consulting and Services | πŸ‡ΈπŸ‡¬ Singapore | 593 | 2001 | | 23 | [Logicalis Asia Pacific](https://www.tamtam.ai/c/logicalis-asia-pacific) (ap.logicalis.com)
digital services, solutions provider, digital transformation for its customers, IT industry drivers such as security, cloud, data management, IoT. | IT Services and IT Consulting | πŸ‡ΈπŸ‡¬ Singapore | 539 | | | 24 | [AIONOS](https://www.tamtam.ai/c/aionos) (aionos.io)
Deliver AI solutions using generative AI, predictive analytics, and machine learning for Telecom, Travel, Healthcare, Logistics, and CX sectors globally. | Technology, Information and Internet | πŸ‡ΈπŸ‡¬ Singapore | 524 | 2024 | | 25 | [Web Synergies](https://www.tamtam.ai/c/web-synergies) (websynergies.com)
Global provider delivering end-to-end IT services, business transformation consulting, and custom software development through strategic technology implementation across multiple international offices and industries. | IT Services and IT Consulting | πŸ‡ΈπŸ‡¬ Singapore | 506 | 1998 | | 26 | [EPI-USE](https://www.tamtam.ai/c/epi-use) (epiuse.com)
Specializes in designing, building, and implementing SAP HCM and payroll systems for multinational corporations and public sector agencies worldwide. | IT Services and IT Consulting | πŸ‡ΈπŸ‡¬ Singapore | 501 | 1984 | | 27 | [Tectura](https://www.tamtam.ai/c/tectura) (tectura.com)
Provides business consulting services to mid-sized companies and large enterprises globally, helping clients create value and achieve business goals through technology and industry expertise. | IT Services and IT Consulting | πŸ‡ΈπŸ‡¬ Singapore | 446 | 2001 | | 28 | [Asian Technology Solutions](https://www.tamtam.ai/c/asian-technology-solutions) (asian-technology.com)
Providing talent acquisition, consulting, IT services, cybersecurity, and fraud prevention solutions to businesses across Asia, Middle East, and Australia. | IT Services and IT Consulting | πŸ‡ΈπŸ‡¬ Singapore | 432 | 2014 | | 29 | [CTC Global Pte Ltd](https://www.tamtam.ai/c/ctc-global-pte-ltd) (ctc-g.com.sg)
Providing end-to-end IT solutions including system integration, consultation, and IT outsourcing services for organizations in Singapore. | IT Services and IT Consulting | πŸ‡ΈπŸ‡¬ Singapore | 428 | 1972 | | 30 | [YCP](https://www.tamtam.ai/c/ycp) (ycp.com)
A corporate strategy consulting firm focused on Asia, helping clients with market entry, growth strategies, and deal advisory across various industries | Business Consulting and Services | πŸ‡ΈπŸ‡¬ Singapore | 416 | 2007 | | 31 | [Arth](https://www.tamtam.ai/c/arth) (arthtechglobal.com)
Provides innovative digital solutions and services for AEC professionals to transition from manual processes to data-driven workflows, enhancing productivity and operational margins. | Construction | πŸ‡ΈπŸ‡¬ Singapore | 401 | 2012 | | 32 | [CloudKeeper](https://www.tamtam.ai/c/cloudkeeper) (cloudkeeper.com)
Comprehensive cloud cost optimization partner offering consulting, AI-driven management, analytics, and usage optimization for AWS and Google Cloud. | Technology, Information and Internet | πŸ‡ΈπŸ‡¬ Singapore | 399 | 2018 | | 33 | [Helius Technologies](https://www.tamtam.ai/c/helius-technologies) (helius-tech.com)
Provides IT services, talent and infrastructure on cloud, centers of excellence, permanent placements, and staffing augmentation for diverse industries across ASEAN. | IT Services and IT Consulting | πŸ‡ΈπŸ‡¬ Singapore | 361 | 2006 | | 34 | [Accord Innovations](https://www.tamtam.ai/c/accord-innovations) (accordinnovations.com)
Accord Innovations offers high-quality IT products, services, and consulting globally, focusing on client satisfaction and delivering measurable business outcomes | IT Services and IT Consulting | πŸ‡ΈπŸ‡¬ Singapore | 358 | 2016 | | 35 | [Baker Tilly Singapore](https://www.tamtam.ai/c/baker-tilly-singapore) (bakertilly.sg)
Provides assurance, tax, deal advisory, governance, risk, restructuring, outsourcing, and corporate secretarial services to diverse businesses. | Accounting | πŸ‡ΈπŸ‡¬ Singapore | 339 | | | 36 | [Knight Frank Singapore](https://www.tamtam.ai/c/knight-frank-singapore) (knightfrank.com.sg)
A global real estate consultancy in Singapore, providing integrated solutions, personalized advice, and innovative strategies to enhance investments, living spaces, and work environments | Real Estate | πŸ‡ΈπŸ‡¬ Singapore | 325 | 1940 | | 37 | [Rolling Arrays](https://www.tamtam.ai/c/rolling-arrays) (rollingarrays.com)
Provides HR transformation consulting, SAP SuccessFactors implementation, HR business consulting, change adoption, system support, and HRIS integration across Asia. | IT Services and IT Consulting | πŸ‡ΈπŸ‡¬ Singapore | 325 | 2009 | | 38 | [Renoir Consulting](https://www.tamtam.ai/c/renoir-consulting) (renoir.ycp.com)
A global change management consulting company with over 25 years of experience, serving as clients' preferred transformation partner for real outcomes and sustainable change | Business Consulting and Services | πŸ‡ΈπŸ‡¬ Singapore | 313 | 1994 | | 39 | [Aon Centre for Innovation and Analytics (ACIA)](https://www.tamtam.ai/c/aon-centre-for-innovation-and-analytics-acia) (aon.com)
Global investment in analytics delivering data-driven insights to clients, reducing volatility, and maximizing performance through risk, retirement, and health solutions. | Financial Services | πŸ‡ΈπŸ‡¬ | 309 | 2008 | | 40 | [Trangile Services](https://www.tamtam.ai/c/trangile-services) (trangile.com)
A global tech firm specializing in omnichannel solutions for retail, supply chain, and logistics, offering expertise in Oracle Retail, INFOR WMS, and more | IT Services and IT Consulting | πŸ‡ΈπŸ‡¬ Singapore | 296 | 2007 | | 41 | [GECO Asia Pte Ltd](https://www.tamtam.ai/c/geco-asia-pte-ltd) (geco.asia)
Providing expert IT consultancy and high-end technology resources across Asia, specializing in AI, Blockchain, Cloud, and Data Science. | IT Services and IT Consulting | πŸ‡ΈπŸ‡¬ Singapore | 242 | 2006 | | 42 | [U3 Infotech](https://www.tamtam.ai/c/u3-infotech) (u3infotech.com)
Leading IT consulting and talent management services, delivering agile, scalable solutions across diverse industries for optimized operations, growth, and profitability. | IT Services and IT Consulting | πŸ‡ΈπŸ‡¬ Singapore | 241 | 2002 | | 43 | [Activate Interactive](https://www.tamtam.ai/c/activate-interactive) (activate.sg)
Technology consultancy providing end-to-end application development, cloud solutions, and UI/UX design to drive digital innovation and improve population health through holistic engineering. | IT Services and IT Consulting | πŸ‡ΈπŸ‡¬ Singapore | 129 | 1997 | | 44 | [Information Officer](https://www.tamtam.ai/c/information-officer) (informationofficer.com)
A company specializing in Agile Development, IT Service Management, and Cloud Computing for digital transformation, using Atlassian tools and Agile methodologies | Technology, Information and Internet | πŸ‡ΈπŸ‡¬ Singapore | 15 | 2006 | | 45 | [Dealxpert Sales Performance](https://www.tamtam.ai/c/dealxpert-sales-performance) (dealxpert.io)
It builds sales capabilities in Asia, offering tailored solutions and innovative tools for B2B sales organizations to enhance performance. | Business Consulting and Services | πŸ‡ΈπŸ‡¬ Singapore | 1 | 2018 | ## How this list is built Every company on this list has a Tamtam company profile. The industry is the one the company gives on LinkedIn; categories such as SaaS or fintech are classified by Tamtam's AI from the company's website and LinkedIn page; and the headquarters city must match the company's own address. Companies are ranked by the number of employees on LinkedIn, and the list is refreshed every night. Classifications can be wrong, so treat the list as a starting point rather than an official ranking. Last updated Nov 12, 2026. ## More company lists in Singapore - [The largest companies in Singapore](https://www.tamtam.ai/l/largest-companies-singapore) (672) - [Multinational companies in Singapore](https://www.tamtam.ai/l/multinational-companies-singapore) (398) - [Companies with in-house R&D in Singapore](https://www.tamtam.ai/l/r-and-d-companies-singapore) (95) - [Companies with a mobile app in Singapore](https://www.tamtam.ai/l/companies-with-mobile-app-singapore) (93) - [SaaS companies in Singapore](https://www.tamtam.ai/l/saas-companies-singapore) (85) - [Critical infrastructure operators in Singapore](https://www.tamtam.ai/l/critical-infrastructure-operators-singapore) (72) - [Corporate groups and holding companies in Singapore](https://www.tamtam.ai/l/holding-companies-singapore) (67) - [AI companies in Singapore](https://www.tamtam.ai/l/ai-companies-singapore) (66) - [IT Services and IT Consulting companies in Singapore](https://www.tamtam.ai/l/it-services-and-it-consulting-companies-singapore) (66) - [Financial Services companies in Singapore](https://www.tamtam.ai/l/financial-services-companies-singapore) (65) - [Software Development companies in Singapore](https://www.tamtam.ai/l/software-development-companies-singapore) (60) - [Manufacturers in Singapore](https://www.tamtam.ai/l/manufacturers-singapore) (58) - [Financial services firms in Singapore](https://www.tamtam.ai/l/financial-services-firms-singapore) (57) - [Publicly traded companies in Singapore](https://www.tamtam.ai/l/publicly-traded-companies-singapore) (53) - [IT services companies in Singapore](https://www.tamtam.ai/l/it-services-companies-singapore) (53) - [Professional services firms in Singapore](https://www.tamtam.ai/l/professional-services-firms-singapore) (49) - [Public sector organisations in Singapore](https://www.tamtam.ai/l/public-sector-organisations-singapore) (47) - [Fintech companies in Singapore](https://www.tamtam.ai/l/fintech-companies-singapore) (43) - [Subscription businesses in Singapore](https://www.tamtam.ai/l/subscription-businesses-singapore) (43) - [Retail chains in Singapore](https://www.tamtam.ai/l/retail-chains-singapore) (42) - [Education providers in Singapore](https://www.tamtam.ai/l/education-companies-singapore) (40) - [Hardware manufacturers in Singapore](https://www.tamtam.ai/l/hardware-companies-singapore) (40) - [Technology, Information and Internet companies in Singapore](https://www.tamtam.ai/l/technology-information-and-internet-companies-singapore) (37) - [Venture-backed startups in Singapore](https://www.tamtam.ai/l/venture-backed-startups-singapore) (36) ## The same list elsewhere - [Consulting firms in the world](https://www.tamtam.ai/l/consulting-firms-in-the-world) (16,009) - [Consulting firms in Asia](https://www.tamtam.ai/l/consulting-firms-in-asia) (1,078) --- Source: https://www.tamtam.ai/l/consulting-firms-singapore