John Quincy Adams (21 December 1874 [1] – 15 March 1933) was an Austrian genre and portrait painter of American ancestry.

Despite this variety of instructors, the expatriate American painter, James McNeill Whistler, appears to have had the most influence on his style.

A minor scandal was created in 1909, when he displayed a group portrait with Dr. Ernst Wertheim performing gynecological surgery.

Kriegspressequartier [de] (war press bureau) and painted on the Russian, Italian, Serbian and Albanian battle fronts.

In 1933, he was preparing to attend an exhibition in Pittsburgh, sponsored by the Carnegie Institute, when he fell ill and died at the Auersperg Sanatorium.