Gilmer Bryan Morgan II, OD (born September 25, 1946) is an American professional golfer.

Morgan was born in Wewoka, Oklahoma. He graduated from East Central State College in Ada, Oklahoma in 1968. In 1972, Morgan earned a Doctor of Optometry degree from the Southern College of Optometry in Memphis, Tennessee before turning professional at golf later that year. He is a member of Sigma Tau Gamma fraternity.

Morgan won seven events on the PGA Tour between 1977 and 1990. He was also one of the most consistent top five finishers during this period. The most prestigious tournament he won on the PGA Tour was the 1978 World Series of Golf. He also played on the 1979 and 1983 Ryder Cup teams.

Morgan was known for playing tournaments with little or no practice. He was exceptional at "playing cold".

Although he never won a major title during his time on the PGA Tour, Morgan showed signs of brilliance. For example, during the 1992 U.S. Open at Pebble Beach, Morgan became the first player to ever reach 10-under-par (−10) during U.S. Open competition when he recorded a birdie on the third hole during the third round. He later added two more birdies to reach −12 after the seventh hole. He would later finish badly to finish at −4. This was good enough for the 54-hole lead. However, a final round 81 left him +5, in a tie for 13th place and eight shots behind eventual winner Tom Kite Morgan also led the 1976 PGA Championship after 36 holes but finished T8.

He became eligible to play on the Champions Tour in 1996. He has enjoyed much success on the Champion's Tour notching 25 wins. Three of his wins have come in senior majors, namely The Tradition in 1997 and 1998 and the Senior Players Championship in 1998.