Oscar A. Trippet (March 6, 1856 – July 15, 1923) was a United States district judge of the United States District Court for the Southern District of California. The Trippet Ranch gate of Topanga State Park is named for him, as his family owned the land through the first half of the 20th century.

- Gender
- Male
- Race
- White
Prior employment
- Private practice, Los Angeles, California1901–1915
- Private practice, San Diego, California1887–1901
- Private practice, Princeton, Indiana1879–1887
- IndianaState senator · 1886
Appointments
1915–1923 · Appointed by Woodrow Wilson (Democratic)Term ended: Death
