Scott Milne Matheson Jr. (January 8, 1929 – October 7, 1990) was an American politician who served as the 12th governor of Utah from 1977 to 1985.

Matheson graduated from Salt Lake City's East High School in 1946, earned a bachelor's degree in political science from the University of Utah in 1950, and a law degree from Stanford University Law School in 1952.

He operated a private law practice in Iron County, Utah, for five years before taking a position with Union Pacific Railroad in 1958.

Another son, Scott Matheson Jr., was the Democratic nominee for Governor of Utah in the 2004 election and was appointed as a federal judge in 2010.

In 1989, Matheson was diagnosed with multiple myeloma, a rare form of cancer believed to have been caused by radioactive fallout from nuclear testing in Nevada.