Guy Orlando Rose (San Gabriel, California, 1867 – Pasadena, 1925) was an American Impressionist painter who gained recognition from critics and the public in his home country during the turn from the nineteenth to the twentieth century. He absorbed Impressionism in France, but his work remained closely tied to the Californian landscape, which gives him a distinct place within the movement.
Born into a large family that owned vineyards in the San Gabriel Valley, he was accidentally shot in the face as a boy during a hunting outing with his brothers. While recovering, he began sketching and painting in watercolour and oil. After graduating from the Los Angeles High School in 1884, he moved to San Francisco, where he studied at the School of Design between 1885 and 1888 and won the Avery Gold Medal for oil painting in 1887.
In September 1888 he enrolled at the Académie Julian in Paris, where he trained under Benjamin-Constant, Jules Lefebvre and Jean-Paul Laurens, and he showed at the Paris Salons several times between 1890 and 1909. During the 1890s he worked in New York as an illustrator for magazines such as Harper's, Scribner's and The Century. In 1899 he decided to return to France and, with his wife Ethel, bought a country house in Giverny. They lived there from 1904 to 1912, and his work of those years shows the influence of Claude Monet, who became his friend and mentor.
From 1914, troubled by recurring effects of lead poisoning, the couple settled permanently in Los Angeles. In the summers of 1918 to 1920 at Carmel-by-the-Sea he joined the local artists' colony and exhibited at the Carmel Arts and Crafts Club. He taught and directed the Stickney Memorial School of Art in Pasadena. In 1921 a stroke left him paralysed, and he died in Pasadena in 1925. The following year the Stendahl Galleries mounted a memorial exhibition of his work.
His legacy is associated mainly with the spread of Impressionism in California, where he helped shape a generation of landscape painters who applied the light and colour of Giverny to the coasts and valleys of the state.