| James W. Silliman | |
| Office: | 51st Speaker of the California State Assembly |
| Term Start: | January 5, 1953 |
| Term End: | April 1, 1954 |
| Predecessor: | Sam L. Collins |
| Successor: | Luther H. Lincoln |
| Office1: | Member of the California State Assembly |
| Constituency1: | 33rd district (1947–1953) 34th district (1953–1955) |
| Term1: | January 6, 1947 – January 3, 1955 |
| Preceded1: | Fred Emlay |
| Succeeded1: | Alan G. Pattee |
| Birth Name: | James Willys Silliman |
| Birth Date: | 12 August 1905 |
| Birth Place: | Castroville, California |
| Death Place: | Salinas, California |
| Party: | Republican |
| Spouse: | Nevelle Hawkins |
| Children: | 3 |
James Willys Silliman (August 12, 1905 – October 21, 1976) was a Republican politician from the US State of California, who served in the California State Assembly for the 33rd and 34th district from 1947 to 1955,[1] including serving as Speaker of the Assembly from 1953 to 1954. He ran unsuccessfully for lieutenant governor in 1954 and for state senator in 1955.