| Seth Millington Jr. | |
| Birth Date: | 1 November 1893 |
| Birth Place: | Willows, California, U.S. |
| State Assembly: | California |
| District: | 4th |
| Term: | January 4, 1937 - January 4, 1943 |
| Preceded: | John Evangelist Frazier |
| Succeeded: | Albert M. King |
| Party: | Democratic |
| Spouse: | Valetta Johnson |
| Children: | 2 |
| Allegiance: |  United States |
| Battles: | World War I |
Seth Millington Jr.[1] served in the California State Assembly for the 4th district and during World War I he served in the United States Army.[2]