Glynn Robert "Donc" Donaho (March 25, 1905 - May 26, 1986) was a U.S. Navy officer known principally for his exploits as a submarine commander during World War II, for which he received the Navy Cross four times, the Silver Star twice, and the Bronze Star. Donaho was born in George, Texas. He graduated from the United States Naval Academy in 1927.
Donaho was the commander of the submarine USS Flying Fish (SS-229) during five war patrols in the Pacific during World War II. He was promoted to Lieutenant Commander at the beginning of 1942 and to Commander in September of that year. In 1944, Donaho commanded a submarine division as well as the submarine USS Picuda (SS-382) during her third war patrol.
After the war, Donaho testified as a witness at the court martial of Captain Charles Butler McVay III, commander of the USS Indianapolis (CA-35). Although he was called as a prosecution witness, Donaho's testimony was actually helpful to McVay. Both Donaho and Mochitsura Hashimoto, the commander of I-58, the Japanese submarine that sank the Indianapolis, testified that zigzagging would not have saved the Indianapolis.
Donaho was promoted to Rear Admiral in 1957 and to Vice Admiral in 1963. He retired from the Navy in 1967 and died in Sierra Vista, Arizona on May 28, 1986.