OC Transpo

OC Transpo
From top left to bottom right: O-Train Line 1, O-Train Line 2, bus on the Transitway, and Bayview station
Overview
Owner	City of Ottawa
Area served	Ottawa, Ontario Gatineau, Quebec
Locale	Ottawa, Ontario
Transit type	Bus service, light rail, bus rapid transit, paratransit
Number of lines	170 bus routes 3 light rail lines
Number of stations	25 rail stations 16 under construction
Annual ridership	70.7 Million (2025)
Key people	Rick Leary, General Manager
Headquarters	1500 St. Laurent Boulevard Ottawa, Ontario, Canada
Website	octranspo.com
Operation
Began operation	1973 (1973)
Number of vehicles	805 buses, 13 diesel multiple units, 56 light rail vehicles
Technical
Track gauge	1,435 mm (4 ft 8+1⁄2 in) standard gauge

Rapid transit lines in Ottawa as of 2025. Only O-Train and Rapid service are shown.

OC Transpo, formerly the Ottawa-Carleton Regional Transit Commission, is the primary public transport agency for the city of Ottawa, Ontario, Canada, operating bus rapid transit, light rail, conventional bus routes, and door-to-door paratransit in the nation's capital region.

OC Transpo was established in 1948 as the Ottawa Transportation Commission, and currently operates three urban rail lines, 11 bus rapid transit (BRT) lines, and 170 regular bus routes. OC Transpo serves 25 light rail (O-Train) stations, and 43 BRT (Transitway) stations. OC Transpo achieved a total ridership of 68 million in 2024.

Ottawa was notable for its Transitway system, a network of grade separated busways linking outer suburbs to the downtown core which originally opened with five stations in 1983, and continued substantial expansion into the late 2000s. Much of the Transitway infrastructure has been, and is currently being, converted to light rail since the opening of the Confederation Line (Line 1) in 2019.

Some OC Transpo routes also serve Gatineau in Quebec during peak periods. In addition, many Société de transport de l'Outaouais routes serving Gatineau also operate into downtown Ottawa.