| John Angus MacMillan | |
| Birth Date: | 1889 3, df=yes |
| Birth Place: | East Lake Ainslie, Nova Scotia, Canada |
| Death Place: | Wadena, Saskatchewan, Canada |
| Office: | Member of the Legislative Assembly of Saskatchewan for Wadena |
| Predecessor: | Herbert Pierce |
| Successor: | William Henry McKinnon |
| Term Start: | 1917 |
| Term End: | 1921 |
| Riding2: | Mackenzie |
| Predecessor2: | Milton Neil Campbell |
| Successor2: | Alexander Malcolm Nicholson |
| Term Start2: | October 1933 |
| Term End2: | June 1945 |
| Profession: | barrister |
| Party: | Liberal |
| Residence: | Wadena, Saskatchewan |
John Angus MacMillan (27 March 1889 – 12 August 1956) was a Liberal party member of the House of Commons of Canada. He was born in Nova Scotia and became a barrister.
MacMillan attended Dalhousie University. He became mayor of Wadena, Saskatchewan in 1917 and that same year was elected a Liberal member of the Legislative Assembly of Saskatchewan for the Wadena provincial riding. He served in that legislature until his defeat in the 1921 provincial election.[1]
He was first elected to Parliament at the Mackenzie riding in a by-election on 23 October 1933, after two previous unsuccessful attempts there in 1925 and 1926. MacMillan was re-elected in 1935 and served a complete term in the 18th Canadian Parliament. In the 1945 election, MacMillan was defeated by Alexander Malcolm Nicholson of the Co-operative Commonwealth Federation. MacMillan died at a hospital in Wadena in 1956.[2] [3]