Head offices
| Photo | Company | Address | Headquarters size |
|---|---|---|---|
 | Sun LifeHead office | One York Street, Toronto, Ontario M5J 0B6 | 390,000 sq ft (36,232 m²) |
 | Thomson ReutersHead office | 19 Duncan Street, Toronto, Ontario, Canada | ≈ 150,000 sq ft (13,935 m²) |
Sizes are the companies’ own figures, as shown on each profile with the source. “—” means the company does not publish one.
Toronto in headquarters history
- 2025–26Starbucks · Four days in the office, and Nashville
From fiscal 2026 support partners work in the office at least four days a week, and people leaders are based in Seattle or Toronto. In April 2026 Starbucks announced a $100 million second support office in Nashville for 2,000 jobs over five years; most support teams stay in Seattle.
- 2025Shopify · Ottawa and New York on the cover
Shopify's 10-K now lists two principal executive offices: 151 O'Connor Street in Ottawa and 85 10th Avenue in New York. The company-wide Summit was held in Toronto.
- 2023Thomson Reuters · 19 Duncan Street
The new Toronto offices, begun in 2020 to consolidate three locations, were completed.
- 2017Sun Life · One York Street
The head office moved to One York Street, bringing more than 2,000 downtown Toronto employees together in one location.
- 2015–21HubSpot · Growing to 447,000 sq ft
Cambridge space rose to about 180,000 sq ft (2015), 280,000 (2017), 382,000 (2019) and 447,000 sq ft (2021), with leases running through 2035. Offices opened in Singapore, Paris, Tokyo, Bogotá, San Francisco and Toronto.
- 2004Imperial Oil · Head office to Calgary
Imperial moved its head office to Calgary from Toronto.
- 1984Sun Life · King and University
Construction of the worldwide headquarters at King and University Streets in Toronto was completed.
- 1978Sun Life · A vote to move
Policyholders voted to relocate the corporate headquarters from Montreal to Toronto.
- 1976RBC (Royal Bank of Canada) · Royal Bank Plaza, Toronto
WZMH Architects completed Royal Bank Plaza at Bay and Front Streets in 1976. The Merchants' Mall opened in October 1976 and the main branch has stood at Bay and Wellington since 1977. It is now RBC's corporate headquarters.
- 1967TD Bank Group (The Toronto-Dominion Bank) · The TD Bank Tower by Mies van der Rohe
The 56-storey Toronto-Dominion Bank Tower, designed by Ludwig Mies van der Rohe with B+H and John B. Parkin and Associates, was completed in 1967, the year TD started its Inuit art collection for Canada's Centennial.
- 1955TD Bank Group (The Toronto-Dominion Bank) · Two banks become The Toronto-Dominion Bank
On February 1, 1955 The Bank of Toronto and The Dominion Bank merged. The new TD had 449 branches and about 4,700 employees across Canada, with offices in London and New York.
- 1923Novo Nordisk · A villa in Hellerup — Nordisk Insulinlaboratorium
After August Krogh brought permission to make insulin home from Toronto, he and Hans Christian Hagedorn began extracting it in Hagedorn's villa in Hellerup, north of Copenhagen. Nordisk Insulinlaboratorium treated its first patients in March 1923.
Questions
Which big companies have their headquarters in Toronto?
On eciffo, 2 of the biggest companies have their head office in Toronto: Sun Life and Thomson Reuters.
What is the biggest company headquarters in Toronto?
Of the head offices on eciffo, Sun Life's Head office is the largest at 390,000 sq ft (36,232 m²), as reported by the company.