OC Transpo

Ottawa-Carleton Regional Transit Commission
From top left to bottom right: O-Train Line 1, O-Train Line 2, bus on the Transitway, and Bayview station
Overview
OwnerCity of Ottawa
Area servedOttawa, Ontario
Gatineau, Quebec
LocaleOttawa, Ontario
Transit typeBus service, light rail, bus rapid transit, paratransit
Number of lines170 bus routes
3 light rail lines
Number of stations25 rail stations
16 under construction
Annual ridership70.7 Million (2025)
Headquarters1500 St. Laurent Boulevard
Ottawa, Ontario, Canada
Websiteoctranspo.com
Operation
Began operation1973 (1973)
Number of vehicles795 buses, 40 diesel multiple units, 56 light rail vehicles
Technical
Track gauge1,435 mm (4 ft 8+12 in) standard gauge

The Ottawa-Carleton Regional Transit Commission, doing business as OC Transpo, 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.

The OC Transpo system is infamous in Ottawa for being extremely unreliable, as it has a very inconsistent schedule, and frustrates riders. According to multiple riders, they say that "it's hard to navigate" and "they don't show up on time".