Two merchant ships have been named SS D.M. Clemson.
- SS D.M. Clemson (1903), U.S. propeller, steamer, bulk freighter, Official No. 157703. Sank in 1908 on Lake Superior with the loss of all hands.[1]
- SS D.M. Clemson (1917), U.S. propeller, steamer, bulk freighter, Official No. 214599. Scrapped in 1980, in Thunder Bay, Ontario.[2]