Gojmir Anton Kos (January 24, 1896 – May 22, 1970) was a Slovene academy-trained painter, photographer, and professor at the Academy of Fine Arts in Ljubljana.

Gojmir was born in the town of Gorizia (then part of Austria-Hungary, now in Italy), where his father, the renowned historian Franc Kos from the vicinity of Škofja Loka in Carniola, taught at the State Gymnasium.

After World War II he was appointed a full professor of drawing at the newly established Academy of Fine Arts in Ljubljana, where he remained until his retirement in 1962.

Kos' paintings were mainly landscapes, portraits, monumental scenes from Slovene history (exhibited in the Slovenian Presidential Palace),[1] figurative compositions, and still lifes, at which he especially excelled.

His favorite medium was oil on canvas, although in his early years he also created some book illustrations, posters, and furniture.