The Hon. Jeffrey W. Horner (Ret.) was a judge for the Alameda County Superior Court in California. He was originally appointed to serve on the Oakland-Piedmont-Emeryville Municipal Court in 1986 by former governor George Deukmejian. He was subsequently elevated to the Superior Court four years later by then-governor Deukmejian. He retired from the bench in 2018 and his vacancy was filled by the Hon. Patrick R. McKinney, II.
Horner received his LL.D. from the University of California, Berkeley School of Law.
Prior to his appointment to the Municipal Court, Horner served as the head of the Alameda County District Attorney's Berkeley office. He had served as a prosecutor with the D.A.'s office for twenty years.