John Murray Glendenning (born: - died: ) was a politician from Alberta, Canada.
Glendenning first ran for a seat to the Legislative Assembly of Alberta in the 1909 Alberta general election in the new Nanton electoral district. He won an upset victory defeating Conservative party leader Albert Robertson who's old district was abolished due to redistribution.
Glendenning won a second term in office in the 1913 Alberta general election defeating Conservative challenger J.T. Cooper.
In the 1917 Alberta general election he ran for a 3rd consecutive term in office but was defeated by independent candidate James Weir. He tried to regain his seat again in the 1921 Alberta general election but was again defeated this time by Daniel Harcourt Galbraith from the United Farmers of Alberta.
| Legislative Assembly of Alberta | ||
|---|---|---|
| Preceded by New District |
MLA Nanton 1909–1917 |
Succeeded by James Weir |