Frederick Charles Loofbourow (February 8, 1874 – July 8, 1949) was a U.S. Representative from Utah.
Born in Atlantic, Iowa, Loofbourow was educated in the common schools of Iowa. He moved with his parents to Utah in 1889. He was graduated from the Ogden Military Academy, Ogden, Utah, in 1892, and from the law department of the University of California at Berkeley in 1896. He was admitted to the bar the same year and commenced practice in Salt Lake City, Utah. He served as district attorney of the third judicial district of Utah 1905-1911, and district judge 1911-1916. He resumed the practice of law.