John Morrison was a politician in Manitoba, Canada. He served in the Legislative Assembly of Manitoba from 1916 to 1922.Morrison was born in Mount Forest, Ontario, the son of Scottish immigrants who had come to Canada one year earlier. In 1878, he moved with his family to Selkirk, Manitoba where he completed his education. He worked as a merchant and was for four years the Office Trustee of Grand Rapids, Manitoba. In 1890, he married Sadie Blimco. Morrison was a Presbyterian and an active freemason.Morrison was first elected to the Manitoba legislature in a by-election on September 16, 1916, in the newly created northern constituency of Rupertsland. Running as an independent, he was declared elected without opposition. Morrison subsequently affiliated with the governing Liberal Party, and was again elected without opposition under its banner in the 1920 provincial election. During this period, he served as a backbench supporter of Tobias C. Norris's government.