| Frederick John McArthur | |
| Parliament: | Ontario Provincial |
| Term Start: | September 30, 1929 |
| Term End: | April 3, 1934 |
| Predecessor: | William George Robertson |
| Successor: | Harold Norman Carr |
| Riding: | Northumberland |
| Party: | Conservative |
Frederick John McArthur was a Canadian politician from the Conservative Party of Ontario. He represented Northumberland in the Legislative Assembly of Ontario from 1929 to 1934.[1]