Rex Putnam (June 7, 1890 – May 17, 1967) was an American educator from the state of Oregon.
A former classroom teacher and district superintendent, Putnam served as Oregon Superintendent of Public Instruction for nearly 25 years, the longest-serving state school superintendent in Oregon history.
Following his retirement in 1961, a new high school in his adopted hometown of Milwaukie, Oregon was named Rex Putnam High School in his honor.