Thomas A. Livesley (December 8, 1863 – July 22, 1947) was an American businessman and politician in the state of Oregon. A successful hop farmer and broker, Livesley was known as the "Hop King" of Oregon. Livesley served as mayor of Salem and as a state representative. He was the original builder and owner of what is still considered to be the tallest commercial building in Salem. The mansion he had built for his family, Mahonia Hall, now serves as the Governor's official residence for the State of Oregon.