| Herbert Sylvester Clements | |
| Smallimage: | Herbert Sylvester Clements.jpg |
| Constituency Mp: | Kent West |
| Parliament: | Canadian |
| Predecessor: | The electoral district was created in 1903. |
| Successor: | Archibald McCoig |
| Term Start: | 1904 |
| Term End: | 1908 |
| Constituency Mp2: | Comox—Atlin |
| Parliament2: | Canadian |
| Predecessor2: | William Templeman |
| Successor2: | The electoral district was abolished in 1914. |
| Term Start2: | 1911 |
| Term End2: | 1917 |
| Constituency Mp3: | Comox—Alberni |
| Parliament3: | Canadian |
| Predecessor3: | The electoral district was created in 1914. |
| Term Start3: | 1917 |
| Term End3: | 1921 |
| Birth Date: | 8 November 1865 |
| Birth Place: | Dover Township, Canada West |
| Party: | Conservative |
Herbert Sylvester Clements (November 8, 1865 - November 30, 1939) was a Canadian politician.
Born in Dover Township, Canada West, a manufacturer and farmer, he was first elected to the House of Commons of Canada in the 1904 federal election for the Ontario electoral district of Kent West. A Conservative, he was defeated in 1908. He was elected in the 1911 elections for the British Columbia riding of Comox—Atlin. He was re-elected in 1917 to the redistributed seat, then named Comox-Alberni, where he was defeated in 1921.
The Village of Port Clements, British Columbia, in the Queen Charlotte Islands, is named for him (the islands were part of Comox-Atlin).