New York State Route 9G (NY 9G) is a state highway in the Hudson Valley of New York in the United States. It runs north from U.S. Route 9 (US 9) at Poughkeepsie, starting out as Violet Avenue, then follows the Hudson River mostly along the eastern side of the US 9 to Rhinebeck, where the two routes cross just north of the village. From this point onward, NY 9G runs on the western side of US 9, closer to the Hudson River, to Hudson. It ends at another junction with US 9 in the city. NY 9G initially extended from Rhinebeck to Hudson when it was assigned as part of the 1930 renumbering of state highways in New York. It was extended to its current length in the late 1930s, supplanting New York State Route 9F, an alternate route of US 9 between Poughkeepsie and Rhinebeck.