John Edward Neil "Jack" Wiebe SOM (May 31, 1936 – April 16, 2007) was a Canadian farmer and politician. He served as a provincial politician, the 18th Lieutenant Governor of Saskatchewan and also as a Senator. Born in Herbert, Saskatchewan, Wiebe graduated from the University of Saskatchewan after which he founded a major farming operation in Main Centre and was owner and president of L&W Feeders Ltd. from 1970 to 1985. He attended Luther College high school and graduated in 1953.