Thomas F. O'Dea (1915-1974) was an American sociologist, author, and teacher.

Thomas F. O'Dea was born December 1, 1915, in Amesbury, Massachusetts to father Patrick J. O'Dea and mother Mary Quinn. Historically, his life bridged the period from World War I to the Vietnam War. During his youth he attended Saint Joseph's Parochial School in Amesbury and Amesbury High School, after which he studied printing at the Wentworth Institute in Boston. After serving in the United States Army Air Force during World War II, he entered Harvard University and graduated summa cum laude in 1949. He continued at Harvard, earning an M.A. and Ph.D. in Sociology, in 1951 and 1953 respectively. In 1966 he authored the book "The Sociology of Religion." He was a member of the faculty at Massachusetts Institute of Technology (1951-1956), The University of Utah (1959-1964), and Columbia University (1964-1966). He completed his teaching career at the University of California, Santa Barbara as a professor of religious studies and sociology. He married his wife Gertrude Stillman on June 5, 1936 in New York City. He died on November 12, 1974 in Santa Barbara, California.