Division No. 1, Saskatchewan, Canada, is one of the eighteen census divisions with the province, as defined by Statistics Canada. It is located in the southeast corner of the province, bordering Manitoba and North Dakota. The most populous community in this division is Estevan.
According to the Canada 2006 Census, 29,168 people lived in this division, which is a 3.5% decrease from 2001. It has a land area of 14,966.74 km² (5,790.285 sq mi).