Master Sergeant Juan E. Negrón Martínez (September 26, 1929 – March 29, 1996) was a member of the United States Army who served in the 65th Infantry Regiment during the Korean War.

He was awarded a Distinguished Service Cross for his actions during combat in the Chinese Spring Offensive at Kalma-Eri, North Korea, on April 28, 1951, which was posthumously upgraded to the Medal of Honor in 2014.

[8][9] Negrón is among three other Puerto Ricans whose Distinguished Service Cross was upgraded to the Medal of Honor, the highest military decoration in the United States.

Master Sergeant Negron distinguished himself by extraordinary heroism in action against enemy aggressor forces in the vicinity of Kalma-Eri, Korea, on 28 April 1951.

When notified that elements of the company were withdrawing, Sergeant Negron refused to leave his exposed position, but delivered withering fire at hostile troops who had broken through a road block.

The extraordinary heroism exhibited by Sergeant Negron on this occasion reflects great credit on himself and is in keeping with the finest traditions of the military service.

Congressional Gold Medal On June 10, 2014, President Barack Obama, signed the legislation, titled "The Borinqueneers CGM Bill", at an official ceremony.