Sidney Webster Fish (March 16, 1885 – February 5, 1950) was an American lawyer and military officer who retired from the law and moved to California, becoming a rancher at the Palo Corona Ranch.

Fish was born on March 16, 1885, in New York City and was named after his uncle, Sidney Webster.

His two surviving siblings were Marian Anthon Fish (1880–1944),[3][4] who married (and divorced) Albert Zabriskie Gray (a son of Judge John Clinton Gray,[5][6][7] and Stuyvesant Fish Jr.,[8] who married Isabelle Mildred Dick (a daughter of Evans R.

[17] In April 1927, Fish and his wife Olga purchased over 1,000 acres (400 ha), which they named the Palo Corona Ranch in Carmel Valley, California.

Fish built a home and ranch on the property and ran a herd of Hereford cattle.

[19][20] On September 18, 1915, Fish married Olga Martha Wiborg (1890–1937) at St. Luke's Church in East Hampton, New York.