Curtis Harvey Castle (October 4, 1848 – July 12, 1928) was an American educator, physician and politician who served one term as a U.S. Representative from California from 1897 to 1899.

Castle was born near Galesburg, Illinois on October 4, 1848, and attended the public schools and Knox College.

[1] He served as chairman of the party in Merced County, and a member of its California state executive committee.

[1] In 1903, Castle moved to Dinuba, where he practiced medicine in addition to owning and operating a peach orchard, vineyard, and land for growing grapes that were used in producing raisins.

[1] This article incorporates public domain material from the Biographical Directory of the United States Congress