Division No. 3 is a census division located within the Pembina Valley Region in the south-central region of the province of Manitoba, Canada. Unlike in some other provinces, census divisions do not reflect the organization of local government in Manitoba. These areas exist solely for the purposes of statistical analysis and presentation; they have no government of their own.
Its major service centre is the city of Winkler. Other important towns include Morden, Altona, and Carman. The major industry of the Pembina Valley is agriculture.