George Augustus Baker (March 19, 1821 – April 2, 1880) was an American portrait painter.

His artistic education was begun by his father George Augustus Baker, Sr. (1760-1847), an artist of merit, and his first professional years were devoted to the then popular miniatures on ivory; but he soon became a portrait painter of rare excellence, his favorite subjects being women and children.

Returning to New York, he opened a studio, and soon ranked among the best portrait painters of the time.

His portraits are characterized by a wonderful richness of coloring and a life-like rendering of flesh-tints.

The best known of his ideal works are "Love at First Sight," "Wild Flowers," "Children of the Wood," "Faith," and "The May Queen."