John Revell "Jack" Dailey (born February 17, 1934) is a retired United States Marine Corps four-star general who served as Assistant Commandant of the Marine Corps (ACMC) and Chief of Staff from 1990 to 1992, Acting Associate Deputy Administrator of the National Aeronautics and Space Administration (NASA) from 1992 to 1999; and director of the National Air and Space Museum (NASM) from 2000 to 2018.

His operational experience includes over 7,500 flying hours in fighters; light attack, reconnaissance, and electronic warfare aircraft; transports; and helicopters.

Returning from overseas in May 1973, Dailey was assigned to the Aviation Weapons Requirements Branch, Headquarters Marine Corps, Washington, D.C.

In 1975 he entered the National War College and, after graduation, returned to the Aviation Plans and Programs Branch at Headquarters Marine Corps.

He returned to Headquarters Marine Corps in July 1981 and was assigned as head of Aviation Plans, Programs, Budget and Joint Doctrine Branch.

[5] Since assuming his position in 2000, Dailey has led efforts to expand the size and scope of the museum and increase public outreach.