| Henry Horton Miller | |
| Constituency Mp: | Grey South |
| Parliament: | Canadian |
| Predecessor: | Matthew Kendal Richardson |
| Successor: | Robert James Ball |
| Term Start: | 1904 |
| Term End: | 1911 |
| Birth Date: | 10 January 1861 |
| Birth Place: | Owen Sound, Canada West |
| Party: | Liberal |
Henry Horton Miller (January 10, 1861 - September 4, 1916) was a Canadian politician.
Born in Owen Sound, Canada West, Miller was educated at the public and high schools of Owen Sound. A real estate agent by occupation, Miller was elected to the House of Commons of Canada for the Ontario electoral district of Grey South in the 1904 federal election.[1] A Liberal, he was re-elected in the 1908 election but was defeated in the 1911 election.