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List of critical infrastructure operators in Singapore

Tamtam tracks 61 critical infrastructure operators headquartered in Singapore. This list ranks all of them by number of employees on LinkedIn, led by DBS Bank, UOB and OCBC. Their median headcount is 2,522. Half of them were founded in 1979 or later. The most common headquarters are Singapore (54).

馃嚫馃嚞 Singapore61 companiesUpdated Oct 24, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
DBS Bankdbs.com

Leading financial group in Asia offering consumer, SME, and corporate banking with strong digital innovation and social impact initiatives.

Banking 馃嚫馃嚞 Singapore 35,008 1968
2
UOBuobgroup.com

Financial solutions provider in ASEAN, offering tailored solutions for individuals and businesses, fostering inclusiveness, environmental well-being, and sustainable growth for future generations

Banking 馃嚫馃嚞 Singapore 28,998 1935
3
OCBCocbc.com

Commercial banking, specialist financial, and wealth management services across nineteen countries including treasury, insurance, asset management, and stockbroking for diverse global clients.

Banking 馃嚫馃嚞 Singapore 18,170 1932
4
Singapore Airlinessingaporeair.com

Providing high-quality air transportation services worldwide with a young fleet, extensive network, and renowned customer care standards.

Airlines and Aviation 馃嚫馃嚞 Singapore 16,305 1972
5
Great Easterngreateasternlife.com

A customer-centric company offering innovative insurance solutions, committed to sustainability, inclusivity, and responsible business practices, with a focus on ESG considerations

Insurance 馃嚫馃嚞 Singapore 14,671 1908
6
NHG Healthnhghealth.com.sg

Public healthcare provider offering integrated clinical care, preventive health, research, education, and community partnerships across multiple hospitals and specialty centers.

Hospitals and Health Care 馃嚫馃嚞 Singapore 13,993 n/a
7
Sumitomo Mitsui Banking Corporation (SMBC)

A leading financial institution with extensive branch networks and a formidable lineup of group companies, providing broad financial services globally.

Financial Services 馃嚫馃嚞 10,000 1895
8
PSA Internationalglobalpsa.com

It focuses on innovative supply chain solutions and port development to enhance global trade while promoting sustainability and community impact.

Transportation, Logistics, Supply Chain and Storage 馃嚫馃嚞 Singapore 9,306 1964
9
Singtelsingtel.com

A leading communications technology group in Asia offering services from 5G and infotainment to businesses and consumers, focused on innovation and creating new customer experiences

Telecommunications 馃嚫馃嚞 Singapore 8,337 1879
10
Puma Energypumaenergy.com

It is a global downstream energy company providing fuels, aviation services, lubricants, LPG, and bitumen across over 35 countries.

Oil and Gas 馃嚫馃嚞 Singapore 8,268 1997
11
National University Health Systemnuhs.edu.sg

Comprehensive academic health system combining hospitals, clinics, research, and education to provide patient-centered care and community health services.

Hospitals and Health Care 馃嚫馃嚞 Singapore 7,826 2008
12
Tan Tock Seng Hospitalttsh.com.sg

A leading hospital in Singapore providing integrated care to a resident population of 14 million through comprehensive healthcare services and community partnerships

Hospitals and Health Care 馃嚫馃嚞 Novena 7,146 1844
13
Singapore General Hospitalsgh.com.sg

Providing affordable tertiary healthcare, nurturing medical professionals, and advancing innovative translational and clinical research with a strong social mission.

Hospitals and Health Care 馃嚫馃嚞 Singapore 5,958 n/a
14
Ocean Network Expressone-line.com

A global shipping company formed from three Japanese liners, emphasizing service quality, process excellence, and international trading presence with a large fleet

Transportation, Logistics, Supply Chain and Storage 馃嚫馃嚞 Singapore 5,878 n/a
15
Trafiguratrafigura.com

Connects vital resources globally, moving oil, metals, gas, and power, while investing in renewable energy and managing industrial assets for efficient supply chains.

Oil and Gas 馃嚫馃嚞 Singapore 5,056 1993
16
Land Transport Authority (LTA) Singaporelta.gov.sg

Planning, building, and maintaining Singapore's land transport infrastructure and systems using advanced technology and engineering methods.

Government Administration 馃嚫馃嚞 Singapore 5,027 1995
17
Ninja Vanninjavan.co

Tech-enabled logistics company providing extensive e-commerce express delivery services and diversified solutions across Southeast Asia with millions of daily parcels.

Truck Transportation 馃嚫馃嚞 4,829 2014
18
SATS Ltd.sats.com.sg

Provider of air cargo handling, airline catering, ground services, aviation security, and aircraft cleaning across multiple continents.

Airlines and Aviation 馃嚫馃嚞 Singapore 4,508 1947
19
SMRT Corporation Ltdsmrt.com.sg

Leading Singapore public transport operator managing rail lines, bus, taxi, private hire services, enhancing commuter experience and cross-border connectivity.

Urban Transit Services 馃嚫馃嚞 3,985 n/a
20
Sembcorp Industries Ltdsembcorp.com

Provider of sustainable energy solutions and urban development projects with a strong renewable energy portfolio across multiple countries.

Utilities 馃嚫馃嚞 Singapore 3,833 1998
21
Synapxecareers-public-healthtech-jobs.synapxe.sg

National agency creating intelligent technological solutions and connecting systems to power a healthier Singapore through advanced health tech and strategic industry partnerships.

IT Services and IT Consulting 馃嚫馃嚞 Singapore 3,654 n/a
22
National University Hospitalnuh.com.sg

Provides comprehensive medical, surgical, and dental specialties. Offers healthcare for adults, women, and children, with unique pediatric transplant programs. Integrates research and teaching.

Hospitals and Health Care 馃嚫馃嚞 Singapore 3,615 1985
23
AIA Singaporeaia.com.sg

Providing life insurance and financial services to individuals, families, and corporates in Singapore for healthier, longer, better lives.

Insurance 馃嚫馃嚞 Singapore 3,379 1931
24
SingHealthsinghealth.com.sg

Driving healthcare transformation, providing affordable, quality care with a network of hospitals, specialty centers, and collaboration in medical research and education

Hospitals and Health Care 馃嚫馃嚞 Bukit Merah 3,092 n/a
25
StarHubstarhub.com

A Singapore-based company offering top-quality communications, entertainment, digital services, and solutions to individuals, homes, and businesses with a focus on sustainability

Telecommunications 馃嚫馃嚞 Singapore 2,830 2000
26
Pacific International Lines (PTE) Ltdpilship.com

A global container shipping line based in Singapore, serving over 500 locations in 90 countries worldwide with a focus on Asia and related services

Transportation, Logistics, Supply Chain and Storage 馃嚫馃嚞 Singapore 2,753 1967
27
SP Groupspgroup.com.sg

Leading utilities provider operating electricity and gas networks, delivering sustainable energy solutions including renewables, EV charging, and digital platforms.

Utilities 馃嚫馃嚞 Singapore 2,726 n/a
28
Changi General Hospitalcgh.com.sg

Academic medical institution with over 1,000 beds providing diverse specialties and quality healthcare to a community of over one million.

Hospitals and Health Care 馃嚫馃嚞 Singapore 2,724 n/a
29
Changi Airport Groupchangiairport.com

Management of airport operations, infrastructure, retail, emergency services, and international consultancy for airports beyond Singapore.

Aviation and Aerospace Component Manufacturing 馃嚫馃嚞 Singapore 2,630 2009
30
Bank of Singapore, Asia鈥檚 Global Private Bankbankofsingapore.com

Dedicated private bank offering bespoke wealth planning, investment solutions, and regional services to high net worth individuals across Asia.

Financial Services 馃嚫馃嚞 Singapore 2,601 2010
31
Monetary Authority of Singapore (MAS)mas.gov.sg

It is Singapore's central bank, overseeing monetary policy, currency issuance, financial services supervision, and developing the country as an international financial hub.

Banking 馃嚫馃嚞 Singapore 2,522 n/a
32
Income Insurance Limitedincome.com.sg

Leading composite insurer in Singapore providing life, health, and general insurance with a focus on protection, savings, and financial well-being.

Insurance 馃嚫馃嚞 Singapore 2,500 1970
33
Scootcareers.flyscoot.com

Low-cost airline offering affordable flights with a strong focus on safety, efficiency, positive culture, and global operational standards.

Airlines and Aviation 馃嚫馃嚞 Singapore 1,940 2011
34
MOH Holdings (Singapore)mohh.com.sg

Oversees public healthcare resources, infrastructure, workforce development, and innovative solutions to ensure efficient, sustainable, and patient-centric healthcare delivery.

Hospitals and Health Care 馃嚫馃嚞 Singapore 1,829 n/a
35
National Environment Agencynea.gov.sg

Ensure clean environment, promote sustainability, maintain public health standards, provide meteorological information, and support community environmental initiatives in Singapore.

Environmental Services 馃嚫馃嚞 Singapore 1,787 2002
36
CPF Boardcpf.gov.sg

Manage retirement savings, healthcare funding, and housing financing for Singaporeans, supporting social security and member empowerment nationwide.

Government Administration 馃嚫馃嚞 Singapore 1,676 1955
37
Raffles Medical Grouprafflesmedicalgroup.com

Provides comprehensive healthcare services from primary to tertiary care across Asia, including hospitals and clinics, with a focus on patient well-being.

Hospitals and Health Care 馃嚫馃嚞 Singapore 1,409 1978
38
Singapore Postsingpost.com

National and international postal services, warehousing, fulfillment, freight forwarding, and last mile delivery across Asia Pacific, reaching over two hundred twenty global destinations.

Transportation, Logistics, Supply Chain and Storage 馃嚫馃嚞 Singapore 1,391 n/a
39
SGX Groupsgxgroup.com

Operates equity, fixed income, and derivatives markets, providing listing, trading, clearing, settlement, depository, and data services for various assets, with a focus on sustainability.

Financial Services 馃嚫馃嚞 Singapore 1,350 n/a
40
M1 Limitedm1.com.sg

A digital network operator in Singapore, offering mobile, fixed line, and fibre communications services with a focus on cutting-edge technology and customer-centric offerings

Telecommunications 馃嚫馃嚞 Singapore 1,288 n/a
41
ComfortDelGrocomfortdelgro.com

It offers diverse transportation solutions including public transport, taxis, and business mobility, while promoting low-carbon initiatives across multiple countries.

Transportation, Logistics, Supply Chain and Storage 馃嚫馃嚞 Singapore 1,169 n/a
42
Banking Circle Groupbankingcirclegroup.com

A global financial technology platform providing modern financial solutions for businesses, offering cross border payments, accounts, liquidity management, and eCommerce solutions

Financial Services 馃嚫馃嚞 Singapore 1,162 n/a
43
Swire Shippingswireshipping.com

Provider of sustainable shipping and landside solutions, connecting global ports with a multi-purpose fleet for diverse cargo types.

Transportation, Logistics, Supply Chain and Storage 馃嚫馃嚞 Singapore 1,090 n/a
44
NETSnets.com.sg

Leading provider of digital payment solutions, managing national payment systems, enabling secure transactions for consumers, merchants, banks, and financial institutions.

Financial Services 馃嚫馃嚞 Singapore 1,032 1985
45
Singlifesinglife.com

A leading financial services company offering innovative, technology-enabled solutions for consumers to achieve financial freedom and control over their financial wellbeing

Insurance 馃嚫馃嚞 Singapore 987 n/a
46
Vena Groupvenagroup.com

Leading green solutions provider driving energy and digital infrastructure transition across Asia-Pacific region, enabling a low-carbon, AI-driven future.

Renewable Energy Power Generation 馃嚫馃嚞 928 n/a
47
CIMB Singaporecimb.com.sg

Offers conventional and Islamic banking solutions, leveraging regional network, for personal and business banking needs, launched retail operations September 2009 in ASEAN鈥檚 financial hub.

Banking 馃嚫馃嚞 Singapore 917 2009
48
Singapore National Eye Centresnec.com.sg

Provides specialized ophthalmological services, emphasizing quality education and research. This center also conducts ophthalmic and vision research through its dedicated institute.

Hospitals and Health Care 馃嚫馃嚞 Singapore 827 1990
49
Yinson Productionyinson-production.com

Independent owner and operator of floating production storage and offloading vessels specializing in sustainable designs and zero emission concepts for global energy projects.

Oil and Gas 馃嚫馃嚞 Singapore 802 n/a
50
National Heart Centre Singaporenhcs.com.sg

National referral center providing comprehensive cardiac care including prevention, diagnosis, treatment, rehabilitation, and heart-lung transplantation services.

Hospitals and Health Care 馃嚫馃嚞 Singapore 769 n/a
51
Pacific Basin Shipping Limitedpacificbasin.com

A global leader in owning and operating modern dry bulk vessels, committed to sustainable shipping, seafarer safety, and delivering quality service worldwide

Maritime Transportation 馃嚫馃嚞 Singapore 735 1987
52
CGS International Securities Singaporecgsi.com.sg

Leading provider of equities trading, wealth management, investment banking, and prime brokerage services across fifteen countries for over fifteen million global customers.

Financial Services 馃嚫馃嚞 Singapore 726 1979
53
Cube Highwayscubehighways.com

Investment platform focusing on road, highway, and select infrastructure projects in India with experienced management and international shareholders.

Investment Management 馃嚫馃嚞 Singapore 679 2015
54
ST Telemedia Global Data Centressttelemediagdc.com

global data centre provider powering sustainable digital infrastructure across multiple countries, supporting business growth and digital ecosystem connectivity worldwide

IT Services and IT Consulting 馃嚫馃嚞 Singapore 675 n/a
55
Asteraster.com.sg

Provider of integrated refinery and petrochemical manufacturing operations with core infrastructure assets supporting chemical and energy solutions in Asia Pacific.

Oil and Gas 馃嚫馃嚞 Singapore 627 n/a
56
Tiger Brokersitiger.com

A leading online brokerage firm focusing on global Chinese investors, listed on NASDAQ

Financial Services 馃嚫馃嚞 Singapore 619 n/a
57
Standard Chartered Singaporesc.com

Providing personal, corporate, and private banking services, supporting commerce and innovation through technology and business leadership in Singapore.

Banking 馃嚫馃嚞 Singapore 617 1859
58
Manulife Singaporemanulife.com.sg

provides financial advice, insurance, and investment solutions across Asia, Canada, and the United States with strong global presence.

Financial Services 馃嚫馃嚞 Singapore 595 1899
59
X-Press Feedersx-pressfeeders.com

A global common carrier providing reliable and cost-effective feeder solutions with a fleet of over 100 vessels operating worldwide

Maritime Transportation 馃嚫馃嚞 Singapore 554 1972
60
acrevis Bankacrevis.ch

Leading regional bank specializing in private real estate financing, investment advice, asset management, and commercial services for SMEs and self-employed.

Banking 馃嚫馃嚞 Saint Gallen 142 2011
61
Allianz Asia Pacificallianz-asiapacific.com

Global financial services provider offering property, casualty, life, health insurance, and asset management to over 18 million customers.

Insurance 馃嚫馃嚞 Singapore 122 1890

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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 Oct 24, 2026.

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