The distinctive unit insignia was originally approved for the 131st Field Artillery, Texas National Guard on 29 May 1928. It was redesignated for the 131st Field Artillery Battalion, Texas National Guard on 6 August 1942. It was redesignated for the 131st Artillery, Texas National Guard on 20 July 1960. The insignia was redesignated on 23 February 1973, for the 131st Field Artillery Regiment. It was redesignated with description and symbolism revised for the 131st Regiment, Texas Army National Guard on 5 November 1997. The insignia was redesignated for the 131st Field Artillery Regiment on 10 October 2000.