| South Portland Bus Service | |
| Headquarters: | 25 Cottage Road |
| Locale: | South Portland, Maine |
| Service Area: | Cumberland County, Maine |
| Service Type: | Public transport bus service, paratransit |
| Routes: | 3 |
| Website: | South Portland Bus Service official web site |
South Portland Bus Service is a municipally owned suburban provider of mass transportation. Because the city of South Portland opted out of the Greater Portland Transit District, this community runs its own separate three-route bus service. Two routes serve major shopping areas and loop through major residential streets, funnelling residents locally and giving them access to downtown Portland. A third route provides access to Willard Beach and Southern Maine Community College, with all three routes going to downtown Portland.