South Portland Bus Service

{{Infobox Bus transit

| name = South Portland Bus Service

| logo =

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| image =File:GP Metro 24A & 3.jpg

| image_caption =South Portland Bus Service's route 24A, in front of Greater Portland Metro's route 3 (Westbrook Crosstown), at The Maine Mall (2023)

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| founded =1983

| defunct =2024

| headquarters = 25 Cottage Road

| locale = South Portland, Maine

| service_area = Cumberland County, Maine

| service_type = Public transport bus service, paratransit

| alliance =

| routes = 3

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| website = [http://www.southportland.org/departments/bus-transportation/ South Portland Bus Service official web site]

}}

South Portland Bus Service was a municipally owned suburban provider of mass transportation. Because the city of South Portland opted out of the Greater Portland Transit District,{{Citation needed|date=January 2024|reason=This needs a reliable source.}} this community ran its own separate three-route bus service from 1983 until 2024, when it merged with the Greater Portland Metro. 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.