Georgius Jacobus Johannes van Os (1782-1861), Dutch painter**, was a 19th century flower painter from the Northern Netherlands. According to the RKD he was a son and pupil of the flower painter Jan van Os and a brother of the painters Pieter van Os and Maria Margaretha van Os (1779-1862).
In 1809 he won the first prize of the Society Felix Meritis in Amsterdam for a still life in which genre he later specialized. Van Os became Ridder in de orde van de Nederlandse Leeuw in 1812.
In 1809 he won the first prize of the Society Felix Meritis in Amsterdam for a still life in which genre he later specialized. Van Os became Ridder in de orde van de Nederlandse Leeuw in 1812.