Carolyn B. Shelton (née Skiff; October 1876 – July 26, 1936) was the long-serving private secretary of Governor of Oregon and United States Senator George Earle Chamberlain. From February 27 to March 1, 1909, she acted as governor in Chamberlain's absence, making her the first woman to serve as acting governor of a U.S. state. She performed only routine duties during that time. She and Chamberlain married in 1926, after the death of his first wife, but he died two years later.