Jean-Jacques Waltz (23 February 1873, Colmar - 10 June 1951), also known as "Oncle Hansi", or simply "Hansi" ("little John") was a French artist of Alsatian origin. He was a staunch pro-French activist, and is famous for his cute drawings, some of which contain harsh critiques of the Germans of the time. He was also a French hero of both the First and the Second World Wars.