Henry Earl Singleton (November 27, 1916 – August 31, 1999) was an American electrical engineer, business executive, and rancher/land owner. Singleton made significant contributions to aircraft inertial guidance and was elected to the National Academy of Engineering. He co-founded Teledyne, Inc., one of America's most successful conglomerates and was its chief executive officer for three decades. Late in life, Singleton became one of largest holders of ranchland in the United States.