ShieldOr, a bendlet Gules between a horse's head erased and a grizzly bear passant Sable.
CrestThat for the regiments and separate battalions of the United States Army Reserve: On a wreath of the colors Or and Gules, the Lexington Minute Man Proper. The statue of the Minute Man, Captain John Parker (H.H. Kitson, sculptor), stands on the Common in Lexington, Massachusetts.
MottoCELER EUNDO CONCURSU FEROX (Swift in March Bold in Attack).
ShieldThe shield is yellow for Cavalry, while the red bendlet indicates the unit served as Artillery. The horse's head is taken from the coat of arms of New Jersey, to which the 302d Cavalry is allocated. The grizzly bear is taken from the coat of arms of California, the birthplace of the Regiment.
CrestThe crest is that of the United States Army Reserve.
The coat of arms was originally approved for the 302d Regiment Cavalry on 17 November 1925. It was amended to change the blazon on 15 January 1927. The insignia was redesignated for the 302d Cavalry Regiment on 17 March 1971.