| Eliphalet Trask | |
| Order: | 23rd |
| Office: | Lieutenant Governor of Massachusetts |
| Term Start: | 1858 |
| Term End: | 1861 |
| Governor: | Nathaniel Prentice Banks |
| Predecessor: | Henry Wetherby Benchley |
| Successor: | John Z. Goodrich |
| Office2: | 3rd Mayor of Springfield, Massachusetts |
| Term Start2: | 1855 |
| Term End2: | 1855 |
| Predecessor2: | Philos B. Tyler |
| Successor2: | Ansel Phelps Jr. |
| Office3: | Member of the Springfield, Massachusetts Board of Aldermen Ward Two |
| Term Start3: | 1852 |
| Term End3: | 1854 |
| Predecessor3: | None, new position |
| Successor3: | W. C. Sturtevant |
| Office4: | Member of the Springfield, Massachusetts Board of Selectmen |
| Birth Date: | 8 January 1806 |
| Party: | Whig, Know Nothing, Republican |
| Spouse: | Ruby Squier |
Eliphalet Trask (January 8, 1806 – December 9, 1890) was an American politician who served as the third mayor of Springfield, Massachusetts, and as the 23rd lieutenant governor of Massachusetts from 1858 to 1861. In 1855 Trask was elected the Mayor of Springfield, Massachusetts, on the Know Nothing party ticket.