Bratt's Lake No. 129 (2006 Population 362 ) is a rural municipality in Saskatchewan, Canada encompassing 844.94 square kilometers in area. The rural municipality maintains its office in Wilcox, Saskatchewan. The rural municipality in conjunction with the provincial government is in charge of maintenance of highways in its area. As well, the municipality provides policing, fire protection and municipal governance for the rural district, with a reeve as its administrator.