Serranus Clinton Hastings (November 22, 1814 – February 18, 1893) was an American politician, rancher and lawyer in California. He studied law as a young man and moved to the Iowa District in 1837 to open a law office. Iowa became a territory a year later, and he was elected a member of the House of Representatives of the Iowa Territorial General Assembly. When the territory became the state of Iowa in 1846, he won an election to represent the state in the United States House of Representatives. After his term ended, he became Chief Justice of the Iowa Supreme Court.