Who Are the Largest Companies in Markham?

The City of Markham, ON

Markham is a rapidly growing city in York Region, Ontario, often called Canada’s high-tech capital. According to 2023 data, Markham’s GDP reached $20.8 billion. The city covers about 210.93 km² and in the 2021 Census had a population of 338,503.

Markham’s demographic profile supports a strong labour pool. In 2021, about 65.7% of the population was aged between 15 and 64 (working age) and the median age was 42.4 years. The population is linguistically diverse: around two thirds of residents report speaking two or more languages.

Population growth has been steady: between 2016 and 2021, Markham grew about 2.9%, adding roughly 9,500 people in that time. More recent estimates in 2025 put the population around 346,331.

Markham is home to nearly 10,000 businesses according to the 2024-25 economic profile. It also has a large technology cluster: about 1,500 tech companies are based in Markham.

Markham’s Economy

Markham’s economy rests on strong clusters in technology, life sciences, finance, professional services, and advanced manufacturing. The ICT / tech cluster alone is large, with hundreds of firms operating R&D, software development, and communications technologies.

The city has shown job growth in recent years. The 2025 Economic Profile cites around 9,899 businesses (surveyed) in Markham.

Markham has also invested in transit-oriented and mixed-use development especially in areas like Downtown Markham / Markham Centre to support the economic clusters and to manage growth.

Who Are the Largest Companies in Markham?

The largest companies in Markham reflect its strengths in technology, finance, life sciences, and retail. Several of these companies are global leaders with headquarters or significant Canadian operations located in the city.

IBM Canada

IBM Canada has been one of Markham’s largest employers for decades. The IBM Toronto Software Lab in Markham is one of the company’s largest software development facilities in the world. It employs thousands of engineers, software developers, and IT specialists. The site has supported projects in cloud computing, artificial intelligence, and enterprise software.

IBM’s presence in Markham demonstrates the city’s role as a technology hub. The company benefits from access to universities and a skilled workforce, while Markham gains high-quality jobs and global recognition.

Advanced Micro Devices (AMD)

AMD has a large research and development facility in Markham. This Canadian base is central to AMD’s global semiconductor operations, particularly in graphics and chip design. Engineers in Markham have contributed to the development of graphics processors used in major gaming consoles, including the Xbox and PlayStation.

AMD’s facility employs hundreds of staff and continues to grow with the rising demand for chips worldwide. Its presence strengthens Markham’s role in the semiconductor industry, which is critical to both consumer electronics and high-performance computing.

Honda Canada

Honda Canada’s head office is located in Markham, employing hundreds of professionals in management, marketing, finance, and product support. While Honda’s manufacturing facilities are elsewhere in Ontario, the Markham office coordinates Canadian operations for the company’s automotive and motorcycle divisions.

Honda’s Markham headquarters is a key part of Ontario’s auto industry, linking regional manufacturing with national sales and support. For Markham, Honda provides high-skilled office jobs and strengthens the city’s connection to the automotive sector.

Johnson & Johnson / Kenvue

The life sciences sector is anchored in part by companies like Johnson & Johnson and Kenvue. Kenvue, the consumer health spin-off of Johnson & Johnson, manages Canadian operations from Markham. Products under this banner include well-known health and wellness brands sold nationwide.

Markham has positioned itself as a destination for pharmaceutical and medical companies. The presence of global firms supports the city’s cluster of life sciences companies, which together employ thousands of workers in research, diagnostics, and product development.

Sienna Senior Living

Sienna Senior Living is headquartered in Markham and is one of Canada’s largest senior housing operators. The company manages retirement residences and long-term care facilities across multiple provinces, serving thousands of residents.

Sienna employs over 12,000 staff and generates annual revenues exceeding $1.5 billion. The company’s head office in Markham connects corporate leadership with its nationwide network. Sienna contributes to the city’s health care cluster and reflects demographic shifts toward aging populations.

Pet Valu Holdings

Pet Valu Holdings is another major company based in Markham. It is one of the largest pet food and supplies retailers in Canada, with hundreds of franchise locations nationwide. As a publicly traded company, Pet Valu has a strong market capitalization and significant revenue growth.

Pet Valu’s headquarters in Markham manages product sourcing, logistics, and franchise operations. The company benefits from the city’s strong retail and distribution networks, and it provides professional jobs in finance, operations, and marketing.

Clover Leaf Seafoods

Clover Leaf Seafoods, a leader in canned and packaged seafood, has its headquarters in Markham. Its products, such as canned tuna and salmon, are sold in grocery stores across Canada. Clover Leaf is part of the global Thai Union Group, which is one of the world’s largest seafood companies.

The Markham headquarters oversees Canadian operations, including sales, distribution, and compliance. This presence connects Markham to global food supply chains and demonstrates the city’s diversity of industries.

Sangoma Technologies Corporation

Sangoma is a communications technology company based in Markham, specializing in VoIP systems, unified communications, and cloud-based telecom services. Sangoma is publicly traded and serves clients worldwide, including enterprises and service providers.

The company has grown through acquisitions and now employs several hundred staff. Sangoma’s focus on communications technology aligns with Markham’s reputation as a hub for ICT companies.

Yogen Früz (International Franchise Corporation)

Yogen Früz, part of International Franchise Corporation, is headquartered in Markham. The brand operates frozen yogurt and smoothie shops in dozens of countries. The Markham office manages franchise operations, brand development, and supply chain logistics.

Yogen Früz represents the global reach of Markham companies, showing how local headquarters can manage international franchise networks. It also adds to the city’s base of consumer and retail businesses.

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Markham is home to global corporations, fast-growing technology firms, and strong local brands. If you are building your business in Markham, you need visibility in a competitive market. NVISION is a marketing agency based in Markham, and we help companies like yours grow through clear strategy, strong design, and measurable campaigns.

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