| J. Berkeley Larsen | |
| Order: | 30th |
| Office: | Lieutenant Governor of Idaho |
| Term Start: | January 3, 1955 |
| Term End: | January 5, 1959 |
| Governor: | Robert E. Smylie |
| Predecessor: | Edson H. Deal |
| Successor: | W. E. Drevlow |
| Birth Date: | 27 February 1889 |
| Birth Place: | Mount Pleasant, Utah[1] |
| Party: | Republican |
James Berkeley Larsen (February 27, 1889 – March 30, 1979) was a Republican politician from Idaho. He served as the 30th lieutenant governor of Idaho from 1955 to 1959 during the administration of Governor Robert E. Smylie.