| Franklin Osgood Barnes | |
| Office: | Member of the Massachusetts House of Representatives 26th Middlesex District |
| Term Start: | 1889 |
| Term End: | 1890 |
| Office2: | Member of the Massachusetts House of Representatives 26th Middlesex District |
| Term Start2: | 1895 |
| Term End2: | 1897 |
| Office3: | Member of the Chelsea, Massachusetts School Committee |
| Office4: | President of the Chelsea, Massachusetts Common Council |
| Term Start4: | 1875 |
| Term End4: | 1876 |
| Office5: | Member of the Chelsea, Massachusetts Common Council |
| Term Start5: | 1875 |
| Term End5: | 1876 |
| Office6: | Member of the Chelsea, Massachusetts Common Council |
| Term Start6: | 1870 |
| Term End6: | 1871 |
| Birth Date: | November 14, 1841 |
| Death Place: | Chelsea, Massachusetts |
| Party: | Republican |
| Profession: | Lawyer |
| Branch: | United States Navy |
| Serviceyears: | August 16, 1862 - July 30, 1863 |
| Rank: | Corporal |
| Battles: | American Civil War |
Franklin Osgood Barnes (1841-1900) was an American lawyer and politician who served as a Member of the Massachusetts House of Representatives.[1]