Tamtam Start free

The 67 largest companies in Waterloo

Tamtam tracks 67 companies headquartered in Waterloo. This list ranks all of them by number of employees on LinkedIn, led by OpenText, University of Waterloo and Definity. Their median headcount is 166. Half of them were founded in 1998 or later.

πŸ‡¨πŸ‡¦ Waterloo67 companiesUpdated Oct 9, 2026
#CompanyIndustryHeadquarters EmployeesFounded
1
OpenTextopentext.com

It specializes in Information Management, assisting businesses of all sizes in securely capturing, governing, and exchanging information globally.

Software Development πŸ‡¨πŸ‡¦ Waterloo 22,990 1991
2
University of Waterloouwaterloo.ca

Leader in innovation driving economic and social prosperity through talent pipeline, groundbreaking research, entrepreneurial culture, and industry collaboration for student success

Higher Education πŸ‡¨πŸ‡¦ Waterloo 11,390 n/a
3
Definitydefinityfinancial.com

Parent company of several established Canadian property and casualty insurance brands focused on improving insurance for customers and communities.

Insurance πŸ‡¨πŸ‡¦ Waterloo 4,398 n/a
4
Wilfrid Laurier Universitywlu.ca

Canadian university focusing on teaching, research, and student satisfaction with programs in arts, business, science, social work, and education.

Higher Education πŸ‡¨πŸ‡¦ Waterloo 4,060 n/a
5
BlackBerryblackberry.com

Provides intelligent software and services to enterprises and governments, enabling transformative applications, new revenue streams, and innovative business models with safety, security, and reliability.

Software Development πŸ‡¨πŸ‡¦ Waterloo 2,005 n/a
6
Descartes Systems Groupdescartes.com

Software-as-a-service solutions enhancing productivity, security, and sustainability for logistics businesses through routing, tracking, shipment planning, and customs compliance.

Software Development πŸ‡¨πŸ‡¦ Waterloo 1,688 1981
7
Equitableequitable.ca

Offering individual insurance, savings, retirement, and group benefits through independent advisors, focusing on personalized service and policyholder ownership.

Insurance πŸ‡¨πŸ‡¦ Waterloo 1,504 1920
8
Economical Insuranceeconomical.com

Provides insurance solutions for homes, vehicles, farms, and commercial operations with a focus on customer care and innovation.

Insurance πŸ‡¨πŸ‡¦ Waterloo 1,391 n/a
9
CarePartnerscarepartners.ca

Providing compassionate home and community health care services with innovative programs addressing evolving needs of patients and caregivers.

Hospitals and Health Care πŸ‡¨πŸ‡¦ Waterloo 1,367 1984
10
OTIP (Ontario Teachers Insurance Plan)otip.com

A not-for-profit insurance advocate serving educators and union organizations, providing personalized insurance benefits and supporting communities through charitable programs

Insurance πŸ‡¨πŸ‡¦ Waterloo 1,063 1977
11
Baker Tilly Canadabakertilly.ca

National association of chartered professional accounting firms providing audit, tax, and advisory solutions for diverse industries through an extensive independent member network.

Accounting πŸ‡¨πŸ‡¦ Waterloo 1,004 n/a
12
Christian Horizonskaris.org

Non-profit organization supporting individuals with disabilities in Canada and around the world by addressing their physical, emotional, social, and spiritual needs

Civic and Social Organizations πŸ‡¨πŸ‡¦ Waterloo 923 1965
13
Teledyne DALSAteledynedalsa.com

Specialized in high-performance image sensing, semiconductor fabrication, and 3D geospatial systems with global R&D and support locations.

Appliances, Electrical, and Electronics Manufacturing πŸ‡¨πŸ‡¦ Waterloo 863 1980
14
Shad Canadashad.ca

The premier live-in summer enrichment program in Canada for high school students, focusing on STEAM and entrepreneurship, with a vast alumni network

Higher Education πŸ‡¨πŸ‡¦ Waterloo 789 1980
15
City of Waterloowaterloo.ca

Provides diverse municipal jobs and services, supports employee development, promotes safety, diversity, and community involvement for residents.

Government Administration πŸ‡¨πŸ‡¦ Waterloo 754 n/a
16
Karis Disability Serviceskaris.org

A non-profit charitable organization in Ontario and Saskatchewan providing disability services and support

Non-profit Organizations πŸ‡¨πŸ‡¦ Waterloo 641 1965
17
eSentireesentire.com

Managed detection and response services protecting organizations worldwide from cyber threats using machine learning, threat hunting, and expert security operations.

Computer and Network Security πŸ‡¨πŸ‡¦ Waterloo 580 2001
18
Eastnetseastnets.com

It specializes in compliance, payment protection, and anti-fraud technologies, ensuring safety and security from financial crime for four decades.

Software Development πŸ‡¨πŸ‡¦ Waterloo 520 1984
19
Conestoga-Rovers & Associates (CRA), A GHD Companyghd.com

A global leader in engineering, environmental consulting, and construction services created through a merger in July 2014 Visit website for more information

Civil Engineering πŸ‡¨πŸ‡¦ Waterloo 473 n/a
20
Activaactiva.ca

Activa develops land, builds homes, and creates communities that prioritize people and innovation in the Region of Waterloo and Southern Ontario

Real Estate πŸ‡¨πŸ‡¦ Waterloo 447 1988
21
peopleCare Communitiespeoplecare.ca

A leading operator of senior living communities in southwestern Ontario, focusing on creating vibrant care environments with innovative programs and services

Hospitals and Health Care πŸ‡¨πŸ‡¦ Waterloo 377 1968
22
EasyLink Services - now a part of OpenTexteasylink.com

It offers cloud-based messaging and transaction services, helping organizations reduce costs and improve communication efficiency through various solutions.

IT Services and IT Consulting πŸ‡¨πŸ‡¦ Waterloo 352 1991
23
MEDA (Mennonite Economic Development Associates)meda.org

An international organization helping entrepreneurs in developing regions start or grow businesses through financial services, technology, training, market access, and equity investment

International Trade and Development πŸ‡¨πŸ‡¦ Waterloo 344 1953
24
Auvikauvik.com

Cloud-based IT management platform simplifying infrastructure management, increasing visibility, and accelerating resolutions for IT teams, MSPs, and organizations in evolving tech environments

Computer Networking Products πŸ‡¨πŸ‡¦ Waterloo 344 2011
25
KidsAbility Centre for Child Developmentkidsability.ca

A charitable organization supporting children and youth in achieving developmental milestones through early, family-centric services, regardless of diagnosis

Hospitals and Health Care πŸ‡¨πŸ‡¦ Waterloo 284 1957
26
TextNowtextnow.com

This company aims to facilitate communication by offering free phone services with a team of curious and innovative individuals leading the way

Telecommunications πŸ‡¨πŸ‡¦ Waterloo 239 n/a
27
NDI (Northern Digital Inc.)ndigital.com

Global leader in optical and electromagnetic navigation technology for medical devices, offering accurate instrument tracking in various applications for improved workflow and procedure efficacy

Medical Equipment Manufacturing πŸ‡¨πŸ‡¦ Waterloo 229 1981
28
University of Waterloo Formula Electricuwfsae.ca

A team of University of Waterloo students design and compete with Formula SAE electric race cars against universities worldwide

Engines and Power Transmission Equipment Manufacturing πŸ‡¨πŸ‡¦ Waterloo 196 n/a
29
Orbit Insurance Servicesorbitinsuranceservices.ca

A nationally licensed brokerage specializing in custom-tailored group insurance programs with a focus on exceptional service and employee well-being

Insurance πŸ‡¨πŸ‡¦ Waterloo 184 n/a
30
Broil Kingbroilking.com

Leading global manufacturer of high-performance gas barbecue grills, designed and assembled in North America, sold in over 40 countries

Manufacturing πŸ‡¨πŸ‡¦ Waterloo 180 1906
31
UA Local 527ua527.com

This company represents piping professionals skilled in fabrication, installation, maintenance, and servicing of various piping services in the industry

Individual and Family Services πŸ‡¨πŸ‡¦ Waterloo 174 n/a
32
Institute for Quantum Computinguwaterloo.ca

A leading research center focused on advancing quantum information science and technology through interdisciplinary collaboration at a global level

Research Services πŸ‡¨πŸ‡¦ Waterloo 174 2002
33
Centre for International Governance Innovation (CIGI)cigionline.org

Independent think tank focused on innovative policy making at the intersection of technology and international governance to improve lives globally.

Research Services πŸ‡¨πŸ‡¦ Waterloo 168 2001
34
Renison University Collegeuwaterloo.ca

An affiliated university college offering academic programs that count towards a University of Waterloo degree, focusing on social sciences, language, culture, and community engagement

Higher Education πŸ‡¨πŸ‡¦ Waterloo 166 1959
35
University of Waterloo Formula Electricuwfsae.ca

A team of University of Waterloo students design and compete with electric race cars in the Formula SAE competition on a global scale

Motor Vehicle Manufacturing πŸ‡¨πŸ‡¦ Waterloo 165 1987
36
University of Waterloo - School of Accounting and Financeuwaterloo.ca

A leading school providing interdisciplinary education, impactful research, and innovative programs in accounting and finance to prepare future financial professionals

Higher Education πŸ‡¨πŸ‡¦ Waterloo 165 1981
37
Serenia Life Financialserenialife.ca

This company offers life insurance, investment solutions, and member benefits, focusing on a human-centric approach to financial services

Financial Services πŸ‡¨πŸ‡¦ Waterloo 155 1972
38
Virtek Vision International Inc.virtekvision.com

Develops laser-based projection and AI inspection manufacturing technologies for diverse industries, providing precision, accuracy, and reliability to global companies since 1986.

Automation Machinery Manufacturing πŸ‡¨πŸ‡¦ Waterloo 127 1986
39
WAT.aiwatai.ca

An organization at the University of Waterloo fostering AI talent through student-led projects, research collaboration, and industry partnerships

Software Development πŸ‡¨πŸ‡¦ Waterloo 116 2022
40
Mappedinmappedin.com

Global leader in indoor mapping and spatial data management Specializing in creating indoor mapping experiences for various spaces using innovative solutions

Software Development πŸ‡¨πŸ‡¦ Waterloo 105 2011
41
Riverside Millwork Groupriversidemillwork.ca

Supplying builders and homeowners with a range of finished products including trim, interior doors, custom wood front entry doors, closets, hardware, and custom millwork solutions since 2005

Wholesale Building Materials πŸ‡¨πŸ‡¦ Waterloo 72 2005
42
VueReal Inc.vuereal.com

Innovative global company revolutionizing micro-semiconductor device industry with eco-friendly MicroSolid Printingβ„’ technology for high-performance microLED displays in various applications

Semiconductor Manufacturing πŸ‡¨πŸ‡¦ Waterloo 72 2016
43
Navtech An Airbus Companynavtech.aero

Global provider of flight operations solutions for 400+ airlines, offering aeronautical charts, navigation data, flight planning, aircraft performance, and crew planning solutions worldwide

Airlines/Aviation πŸ‡¨πŸ‡¦ Waterloo 55 1981
44
BusPlannerbusplanner.com

This company provides route planning and student transportation management products and services for pupil transportation professionals, including optimization tools and IT services

Software Development πŸ‡¨πŸ‡¦ Waterloo 53 1983
45
Protoproto.cx

Leading generative AI platform for local customer experience, automating high-volume interactions across text, voice, and messaging channels for various industries globally

Software Development πŸ‡¨πŸ‡¦ Waterloo 45 2018
46
DataCitydatacity.ca

A privately-held company providing mission critical IT/datacenter services for corporate institutions, offering fully managed IT support for medium to large/enterprise companies

IT Services and IT Consulting πŸ‡¨πŸ‡¦ Waterloo 39 2017
47
DigitalEddigitaled.com

Innovative teaching and learning solution with engaging STEM content, sophisticated algorithms, rich feedback, advanced automation, fostering successful student outcomes

E-Learning Providers πŸ‡¨πŸ‡¦ Waterloo 31 2018
48
Descartes Peoplevoxpeoplevox.com

provides warehouse management system enabling e-commerce brands to control fulfillment processes efficiently and scale operations with 24/7 support

IT Services and IT Consulting πŸ‡¨πŸ‡¦ Waterloo 30 2008
49
Brightpath Capitalbrightpathcapital.ca

Private alternative income investment fund specializing in Canadian mortgages, offering diversification, higher yields, and low risk for investors Simplifying mortgage investing through pooled funds management

Real Estate πŸ‡¨πŸ‡¦ Waterloo 26 2016
50
GeoMategeomate.ai

Transforms real-world imagery and spatial data into structured, machine-readable environments for mobility, simulation, infrastructure, and smart city applications using AI.

Data Infrastructure and Analytics πŸ‡¨πŸ‡¦ Waterloo 21 n/a
51
Descartes MacroPointβ„’macropoint.com

A multimodal freight visibility platform providing real-time tracking and predictive analytics for shippers, brokers, and 3PLs, connecting to thousands of carriers and devices

Transportation, Logistics, Supply Chain and Storage πŸ‡¨πŸ‡¦ Waterloo 20 2011
52
idloomidloom.com

It is an event management platform that optimizes planning, registration, ticketing, analytics, and integrates with existing technologies for various events.

Technology, Information and Internet πŸ‡¨πŸ‡¦ Waterloo 19 2015
53
Validus Research Inc.renre.com

A global reinsurance company acquired Validus Re from AIG, expanding its capabilities and strengthening its position in the industry

Insurance πŸ‡¨πŸ‡¦ Waterloo 19 n/a
54
Rellman Foodsrellmanfoods.com

Supplier of high-quality beef from South America and other origins, serving distributors and restaurant chains across Europe and Asia.

Food and Beverage Services πŸ‡¨πŸ‡¦ Waterloo 14 2001
55
SmartLinessmartlines.ca

This company helps sports fans become smart sports bettors by teaching them basics of betting, comparing odds, offering a betting simulator for practice

Spectator Sports πŸ‡¨πŸ‡¦ Waterloo 14 2018
56
Frost Wealth Managementfrostwealthmanagement.com

A leading Canadian financial advisory network offering investment and wealth management services to individuals, families, corporations, and foundations

Financial Services πŸ‡¨πŸ‡¦ Waterloo 13 1988
57
Runners'​ Choice Waterloorunnerschoicewat.on.ca

Specializing in running, walking, and triathlon gear, this independent store offers footwear, apparel, and accessories with a knowledgeable staff

Sporting Goods Manufacturing πŸ‡¨πŸ‡¦ Waterloo 12 1997
58
Megawiremegawire.com

Industry-leading provider of managed IT services in Southern Ontario, offering customized solutions for businesses of all sizes with a comprehensive background in networking, storage, and virtualization

IT Services and IT Consulting πŸ‡¨πŸ‡¦ Waterloo 10 1998
59
Sentry Group | Wealth Partnerssentrygroup.ca

Wealth management firm providing comprehensive, dynamic financial planning for individuals and businesses, focusing on growth, security, and transparent, holistic solutions

Financial Services πŸ‡¨πŸ‡¦ Waterloo 9 2004
60
YOURIKA AIyourika.ai

Leading AI research and development company, using AI for good to empower impact markets through innovative solutions and AI-enabled products like Smart'n and NurseGPT

Research Services πŸ‡¨πŸ‡¦ Waterloo 9 2019
61
DotsLivedotslive.com

An open innovation and Generative AI community for building, exploring, and learning new technologies and solutions

Software Development πŸ‡¨πŸ‡¦ Waterloo 7 2024
62
PG Design Studio Incpgdstudio.com

Innovative construction company focused on strong project concepts, collaborative integrated project delivery, and client-centric design solutions Join our team today!

Architecture and Planning πŸ‡¨πŸ‡¦ Waterloo 6 2015
63
Volta Techniquevoltatechnique.com

Specializing in clean energy storage and management technology, the company focuses on innovative solutions for sustainable energy needs

Utilities πŸ‡¨πŸ‡¦ Waterloo 4 n/a
64
Universal Quantum Devices Inc. (UQDevices)uqdevices.com

Specializing in quantum technologies, this company based in Waterloo, Ontario offers solutions for quantum cryptography, photon correlation experiments, and real-world applications in space

Research Services πŸ‡¨πŸ‡¦ Waterloo 3 2010
65
Grand Porter Logisticsgrandporter.com

A comprehensive logistics company offering various shipping options, including ground, rail, ocean, air, specialty transport, and warehousing services Providing top-notch service

Transportation, Logistics, Supply Chain and Storage πŸ‡¨πŸ‡¦ Waterloo 3 2012
66
NanoRial Technologies Ltdnanorial.com

Specializing in advanced materials, NanoRial Technologies enables superior properties in materials through its proprietary mixing process with nanotubes, transforming customer challenges into solutions

Nanotechnology Research πŸ‡¨πŸ‡¦ Waterloo 2 2018
67
KIS Toolskistools.com

An engineering and manufacturing company that specializes in bringing ideas to life with in-house machining, fabrication, and expert engineering services

Mechanical Or Industrial Engineering πŸ‡¨πŸ‡¦ Waterloo 1 2018

Turn this list into pipeline

Tamtam finds the decision-makers at every company on a list like this one, with verified emails, phone numbers and the buying signals that tell you when to reach out.

Build your own list, free

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 9, 2026.

The same list elsewhere in Canada