The United States NAVY operated their Grumman C-2A and C-2A (R) Greyhound in several squadrons. Four of them are still using the aircraft.

VAW-110 (Firebirds)     NAS Miramar April 20, 1967 - Sept. 30, 1994
VAW-120 (Greyhawk) VAW-120     NAS Oceana April 1, 1967 - Present
VR-24 (Lifting Eagle)     NAF Sigonella, Sicily - March 31, 1993
VRC-30 (Providers)     NAS North Island June 24, 1943 - Present
VRC-30 DET 1     Hustlers USS CARL VINSON (2015)
FS CHARLES DE GAULLE (2015)
 
VRC-30 DET 2     Roughnecks USS GEORGE WASHINGTON (2015)  
VRC-30 DET 3     Crusaders USS NIMITZ  
VRC-30 DET 4     Pure Horsepower USS JOHN C. STENNIS  
VRC-30 DET 5 (NAF Atsugi)     We Deliver NAF Atsugi, Japan  1994 - Present
VRC-40 (Rawhides)     Naval Station Norfolk, Virginia, U.S.A. July 1, 1960 - Present
VRC-40 DET 1        
VRC-40 DET 2   Bush Whackers USS Dwight D. Eisenhower (CVN-69)  
VRC-40 DET 3          
VRC-40 DET 4     Battlefish /
Horsemen
USS Harry S. Truman (CVN-75) / CVW-3  
VRC-40 DET 5  
     
VRC-50 (Foo Dog)     NAS Atsugi, Japan
NAS North Island, CA, U.S.A.
NAS Cubi Point, Philippines
Oct. 1, 1966 - Oct. 7, 1994
VX-20 (Airtevron)     NAS Patuxent River 1975 - Present

 

 The C-2A had his first flight at November 18, 1964.