Division No. 21, also informally known as Flin Flon-Northwest, is a census division within 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.
Census maps show that the division also includes the northernmost portion of Lake Winnipeg (that portion north of the 53rd parallel north) as part of its southeasternmost section.
The division had a population of 21,606 in the Canada 2006 Census.