# Top 30 consulting firms in Sydney

Tamtam tracks 47 consulting firms headquartered in Sydney. This list ranks the 30 largest by number of employees on LinkedIn, led by Worley, GHD and KPMG Australia. Their median headcount is 677. Half of them were founded in 1995 or later.

The consulting firms in Sydney listed here are predominantly large, established professional services and IT consulting groups. These companies offer a wide range of expertise, from engineering and environmental solutions to audit, tax, and digital transformation. They cater to diverse industries, including energy, chemicals, resources, and government organizations.

Notable firms include Worley, a global professional services company specializing in energy and resources; GHD, providing integrated solutions in water and energy; KPMG Australia, offering audit, tax, and consulting services; and Deloitte Australia, focused on cybersecurity and digital marketing. Planit is a global leader in quality engineering, while Atturra provides end-to-end IT transformation services.

🇦🇺 Sydney · 30 companies · Updated Nov 11, 2026

| # | Company | Industry | Headquarters | Employees | Founded |
|---|---|---|---|---|---|
| 1 | [Worley](https://www.tamtam.ai/c/worley) (worley.com)<br>Global professional services company specializing in energy, chemicals, and resources, providing integrated solutions for project delivery and asset management | Professional Services | 🇦🇺 Sydney | 37,425 |  |
| 2 | [GHD](https://www.tamtam.ai/c/ghd) (ghd.com)<br>A global network of professionals providing integrated solutions in water, energy, and communities through engineering, environmental, design, and construction expertise | Civil Engineering | 🇦🇺 Sydney | 17,363 | 1928 |
| 3 | [KPMG Australia](https://www.tamtam.ai/c/kpmg-australia) (kpmg.com.au)<br>Professional services firm offering audit, tax, legal, management consulting, and digital solutions to diverse industries and sectors in Australia. | Business Consulting and Services | 🇦🇺 Sydney | 9,429 |  |
| 4 | [Deloitte Australia](https://www.tamtam.ai/c/deloitte-australia) (deloitte.com.au)<br>A forward-thinking professional services firm focused on cyber security, virtual reality, digital marketing, and tech integration across various industries, aiming to make a meaningful impact | Management Consulting | 🇦🇺 Sydney | 7,674 |  |
| 5 | [PwC Australia](https://www.tamtam.ai/c/pwc-australia) (pwc.com.au)<br>Professional services focused on building trust in society and solving important problems through insights and expertise from people. | Business Consulting and Services | 🇦🇺 Sydney | 5,636 |  |
| 6 | [WSP in Australia](https://www.tamtam.ai/c/wsp-in-australia) (wsp.com)<br>A leading professional services consulting firm providing technical expertise and strategic advice in various sectors, designing lasting solutions for future generations with integrated digital innovations | Professional Services | 🇦🇺 Sydney | 4,487 |  |
| 7 | [180 Degrees Consulting](https://www.tamtam.ai/c/180-degrees-consulting) (180dc.org)<br>Global youth-led consultancy for non-profits, governments, and social-conscious organizations, providing consulting services to improve education, reduce homelessness, and alleviate poverty. | Non-profit Organizations | 🇦🇺 Sydney | 2,365 | 2007 |
| 8 | [Planit](https://www.tamtam.ai/c/planit) (planit.com)<br>Global leader in quality engineering and assurance solutions, empowering businesses to enhance software quality and delivery processes through continuous growth and excellence | IT Services and IT Consulting | 🇦🇺 Sydney | 1,931 | 1997 |
| 9 | [Grant Thornton Australia](https://www.tamtam.ai/c/grant-thornton-australia) (grantthornton.com.au)<br>Experienced professionals providing audit, assurance, tax, and advisory services with a focus on client care and principled execution. | Accounting | 🇦🇺 Sydney | 1,739 |  |
| 10 | [VBP](https://www.tamtam.ai/c/vbp) (vbp.au)<br>Our focus is on fostering long-term success through strategic partnerships and support | Financial Services | 🇦🇺 Sydney | 1,136 | 2013 |
| 11 | [UBT](https://www.tamtam.ai/c/ubt) (universalbusinessteam.com)<br>Global consulting organization supporting family businesses with business advisory, coaching, and training programs, while also providing support to education, charity, and disaster relief initiatives | Business Consulting and Services | 🇦🇺 Sydney | 1,079 |  |
| 12 | [Atturra](https://www.tamtam.ai/c/atturra) (atturra.com)<br>An Australian-based advisory and IT solutions provider offering end-to-end transformation services, including advisory, cloud services, data integration, and managed services, to clients worldwide | IT Services and IT Consulting | 🇦🇺 Sydney | 1,049 |  |
| 13 | [NRI Australia & New Zealand](https://www.tamtam.ai/c/nri-australia-and-new-zealand) (nri-anz.com)<br>Provider of transformative digital solutions through strategy, consulting, infrastructure, and managed IT services, with global reach and a passionate, customer-focused team | IT Services and IT Consulting | 🇦🇺 Sydney | 846 | 1965 |
| 14 | [Nexon Asia Pacific](https://www.tamtam.ai/c/nexon-asia-pacific) (nexon.com.au)<br>An award-winning digital consulting partner offering end-to-end solutions in security, cloud, and digital services to mid-market, enterprise, and government organizations | IT Services and IT Consulting | 🇦🇺 Sydney | 726 |  |
| 15 | [APP Corporation](https://www.tamtam.ai/c/app-corporation) (app.com.au)<br>Consultancy services in property and infrastructure, offering project management, advisory, risk management, and real estate services across Australia. | Business Consulting and Services | 🇦🇺 Sydney | 677 | 1989 |
| 16 | [Expert Education & Visa Services](https://www.tamtam.ai/c/expert-education-and-visa-services) (experteducation.com)<br>Global education and migration consulting institution providing honest guidance for studying abroad in Australia, Canada, the US, and the UK | Education Administration Programs | 🇦🇺 Sydney | 627 | 2003 |
| 17 | [Logistics Executive Group](https://www.tamtam.ai/c/logistics-executive-group) (logisticsexecutive.com)<br>A supply chain-focused hub for recruitment, advisory, coaching, and media services, offering solutions for growth and improved performance across various business aspects | Transportation, Logistics, Supply Chain and Storage | 🇦🇺 Sydney | 605 | 1999 |
| 18 | [WT (Australia)](https://www.tamtam.ai/c/wt-australia) (wtpartnership.com.au)<br>International property, project, and cost management consultants who tailor solutions to meet clients' needs globally through partnerships and independent ownership | Construction | 🇦🇺 Sydney | 585 | 1949 |
| 19 | [TBH](https://www.tamtam.ai/c/tbh) (tbhconsultancy.com)<br>Specialized project delivery services ensuring efficient, independent, and ethical management across diverse industries with extensive experience since 1965. | Business Consulting and Services | 🇦🇺 Sydney | 546 | 1965 |
| 20 | [Partners in Performance, Part of Accenture](https://www.tamtam.ai/c/partners-in-performance-part-of-accenture) (pip.global)<br>A global management consultancy specializing in driving operational excellence and facilitating lasting organizational change through partnership with clients | Business Consulting and Services | 🇦🇺 Sydney | 522 |  |
| 21 | [FTS Group](https://www.tamtam.ai/c/fts-group) (ftsg.com.au)<br>An advisory technology consulting firm helping over 600 clients in public and private sectors leverage technology for growth and success | IT Services and IT Consulting | 🇦🇺 Sydney | 501 |  |
| 22 | [HPX Group](https://www.tamtam.ai/c/hpx-group) (hpxgroup.com.au)<br>Empowering talented individuals to provide essential corporate services in legal, governance, risk, and compliance to facilitate business growth and success | Professional Services | 🇦🇺 Sydney | 495 |  |
| 23 | [Northrop Consulting Engineers](https://www.tamtam.ai/c/northrop-consulting-engineers) (northrop.com.au)<br>A locally-owned engineering consultancy with expertise in Civil, Structural, Building Services, and Sustainability, delivering successful solutions through a collaborative approach | Engineering Services | 🇦🇺 Sydney | 490 | 1976 |
| 24 | [JHA Consulting Engineers](https://www.tamtam.ai/c/jha-consulting-engineers) (jhaengineers.com)<br>A multidisciplinary group of engineers and consultants providing comprehensive technical services for the built environment industry, specializing in various design fields and sectors | Design Services | 🇦🇺 Sydney | 421 | 1995 |
| 25 | [ACOR Consultants](https://www.tamtam.ai/c/acor-consultants) (acor.com.au)<br>An employee-owned engineering consulting firm providing specialist services in multiple sectors, with a focus on client success and a strong workplace culture | Engineering Services | 🇦🇺 Sydney | 417 | 1997 |
| 26 | [GHD Design](https://www.tamtam.ai/c/ghd-design) (ghd.com)<br>GHD Design empowers transformation through innovative design and collaboration, creating a more sustainable and integrated built environment for future generations | Architecture and Planning | 🇦🇺 Sydney | 398 | 1927 |
| 27 | [Novigi](https://www.tamtam.ai/c/novigi) (novigi.com.au)<br>Specializing in data and technology solutions for the financial services industry, we provide expertise to solve complex problems and deliver value reliably | IT Services and IT Consulting | 🇦🇺 Sydney | 378 | 2016 |
| 28 | [DXC Red Rock](https://www.tamtam.ai/c/dxc-red-rock) (dxc.to)<br>Leader in Oracle consulting and managed services in Australia and New Zealand, offering dynamic technology solutions for businesses globally | IT Services and IT Consulting | 🇦🇺 Sydney | 340 |  |
| 29 | [Cognizant Servian](https://www.tamtam.ai/c/cognizant-servian) (cognizant.com)<br>Specializing in cloud and data consulting, merging two expert teams to deliver digital transformation services for leading brands in the ANZ region | IT Services and IT Consulting | 🇦🇺 Sydney | 283 | 2008 |
| 30 | [Hall Chadwick](https://www.tamtam.ai/c/hall-chadwick) (hallchadwick.com.au)<br>A leading Australian accounting group providing a wide range of services including auditing, taxation, financial planning, and business recovery support | Accounting | 🇦🇺 Sydney | 278 | 1886 |

## 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 11, 2026.

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Source: https://www.tamtam.ai/l/consulting-firms-sydney