| Hosea Morrill Knowlton | |
| Term Start: | 1894 |
| Term End: | 1902 |
| Governor: | Frederic T. Greenhalge Roger Wolcott Winthrop Murray Crane |
| Office2: | District Attorney of the Southern District of Massachusetts |
| Term Start2: | January, 1879 |
| Term End2: | 1893 |
| Predecessor2: | George Marston |
| Term Start3: | 1878 |
| Term End3: | 1879 |
| Term Start4: | 1876 |
| Term End4: | 1877 |
| Office5: | Register in Bankruptcy |
| Term Start5: | May, 1872 |
| Term End5: | 1878 |
| Successor5: | Office abolished |
| Office6: | City Solicitor of New Bedford, Massachusetts |
| Term Start6: | 1877 |
| Term End6: | 1877 |
| Term Start7: | 1873 |
| Term End7: | 1876 |
| Birth Date: | May 20, 1847 |
| Spouse: | Sylvia Bassett Almy M. 1873. |
| Children: | John Wellington Knowlton; Abby Almy Knowlton; Frank Warren Knowlton; Edward Allen Knowlton; Helen Sophia Knowlton; August I. Knowlton; Sylvia Prescott Knowlton; Benjamin Almy Knowlton. |
| Alma Mater: | Keene, New Hampshire High School; Tufts College, B.A. 1867; Harvard Law School, class of 1870. |
| Profession: | Attorney |
Hosea Morrill Knowlton (May 20, 1847 - December 19, 1902) was a lawyer, District Attorney, and Attorney General of Massachusetts.