USS Charger (CVE-30) (originally AVG-4, then AVG-30, then later ACV-30) was an escort carrier of the United States Navy during World War II.
Planned as the third of a class of four C-P-3 cargo/passenger liners for the Moore-McCormack company, the ship was launched on 1 March 1941 by Sun Shipbuilding and Drydock Co., Chester, Pennsylvania; as Rio de la Plata, sponsored by Mrs. Felipe A. Espil (Courtney Letts de Espil). On 20 May 1941, the United States Maritime Commission requisitioned all four unfinished combiliners, for conversion to military use.