Colchester—Musquodoboit Valley is a provincial electoral district in Nova Scotia, Canada, that elects one member of the Nova Scotia House of Assembly.

In 1993, the name was changed to Colchester-Musquodoboit Valley and it gained the Salmon River and Musquodoboit Valley areas from Bedford-Musquodoboit Valley, and Millbrook 27 from Truro-Bible Hill.

[1] It includes the southern half of Colchester County (not including the Truro area) plus the Musquodoboit Valley region of the Halifax Regional Municipality.

The landmass of Colchester-Musquodoboit Valley is 3,096 km2 (1,195 sq mi).

[2] This riding has elected the following members of the Legislative Assembly: