William Schneider was a senior NASA official who served as Gemini Mission Director for seven of the 10 manned Gemini missions, NASA Apollo Mission Director and Apollo Program Deputy Director for Missions (1967–1968), Skylab Program Director (1968–1974), Deputy Associate Administrator for Space Transportation (1974–1978), and Associate Administrator for Space Tracking and Data Systems (1978–1980). He received a PhD in engineering from the Catholic University and joined NASA in June 1963.