Juan Antonio Giménez López ([ˈxwaŋ xiˈmenes]; 26 November 1943 – 2 April 2020) was an Argentine comic book artist and writer, most recognized for his detailed machine-like imagery.

Among his noted works include stories for the French Métal Hurlant and the Argentinian L'Eternauta magazines, and the comic series Metabarons co-developed by Alejandro Jodorowsky.

[3] His first stories, for Argentine editors such as Colomba and Record,[4] were largely inspired by Hugo Pratt (during the years he spent in Argentina) and Francisco Solano López.

[1] Giménez's style has become famous for the extreme attention he devotes to technical and historical details; his series Pik As has been defined as "a comic encyclopedia of World War II.

[8] One of his most famous collaborations was with Chilean Alejandro Jodorowsky for the popular Metabarons comic series started in 1992 and ran through 2003 published by Humanoids.