Lyle Township is a township in Mower County, Minnesota, United States. The population was 402 at the 2000 census. The largest city contained within the township is Lyle with 566 people. All other areas of the township are unincorporated. The township was named for Robert Lyle, an early settler from Ohio who later went on to become judge of probate and an elected representative of the region in the Minnesota House of Representatives.