| Frank Howard Greenlaw | |
| Parliament: | Ontario Provincial |
| Term Start: | October 20, 1919 |
| Term End: | May 10, 1923 |
| Predecessor: | Elisha Jessop |
| Successor: | Edwin Cyrus Graves |
| Riding: | St. Catharines |
| Party: | Labour |
Frank Howard Greenlaw was a Canadian politician from the Labour Party. He represented St. Catharines in the Legislative Assembly of Ontario from 1919 to 1923.[1]