Maryfield No. 91 (2006 Population 341) is a rural municipality in south-eastern Saskatchewan, Canada encompassing 759.63 square kilometers in area. The rural municipality maintains its office in the village of Maryfield, 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. In July of each year Maryfield holds an annual indoor rodeo.