Clifford R. "Cliff" Bayer (born August 16, 1964) is an American politician who served as a member of the Idaho Legislature from 2004 to 2019.
Bayer graduated from Borah High School and earned his Bachelor of Science degree in biology from Boise State University.
Bayer was elected to the Idaho House of Representatives in 2004 and served until 2012. He served as a member of the Idaho Senate from 2012 to 2019. He resigned from the Idaho Senate to serve as chief of staff for Congressman Russ Fulcher.