Grand Lake-Gagetown was a provincial electoral district for the Legislative Assembly of New Brunswick, Canada.

It was first created in the 2006 redrawing of electoral districts and was first used in the general election later that year.

It was created in 2006 from parts of Grand Lake and Oromocto-Gagetown.

From Grand Lake, it took Chipman, Minto and other communities around the Grand Lake area, however large portions of the district—both in terms of geographics with large forested areas in the west of the district and in terms of population with suburban areas just outside of Fredericton—were lost to the district of Fredericton-Fort Nashwaak.

From Oromocto-Gagetown it took all portions of the district north of the Saint John River, including the Village of Gagetown.