Roy Jones Guyer (October 25, 1885 – April 3, 1956) was an American college football player and college football, basketball, baseball, and soccer coach. He served as the head football coach at Lebanon Valley College from 1908 to 1910 and again from 1913 to 1917 and at the University of Connecticut in 1919, compiling a career college football coaching record of 27–39–2. Guyer died on April 3, 1956, at his home in Storrs, Connecticut.