Horace Wolcott Robbins Jr. (American, 1842-1904) was a landscape painter known for his depictions of the Adirondack Mountains in New York and the White Mountains of New Hampshire. Born in Mobile, Alabama, he moved with his family to Baltimore at age six and later studied at Newton University. After relocating to New York City, he trained under James M. Hart and opened his own studio in 1860. Robbins traveled widely, studying in England, Paris, and Switzerland, and accompanied Frederick E. Church on a painting trip to the West Indies and Europe in 1864. He maintained a studio near William M. Hart in the Adirondacks and spent summers in Connecticut, producing works such as Blue Hills of Jamaica (1874), Lake Katahdin, Maine (1882), and Early Autumn, Adirondacks (1883). His primary medium was watercolor, though he also painted in oils, and he counted Church, William Hart, and Worthington Whittredge among his close artistic associates.

Robbins was an active member of the American art community, elected an Associate of the National Academy of Design in 1864 and an Academician in 1878, later serving as recording secretary. He belonged to the American Watercolor Society, the New York Etching Club, the Artists Fund Society (president 1885–1887), and the Century Association, among others. He exhibited widely at institutions including the National Academy of Design, Pennsylvania Academy of the Fine Arts, Boston Art Association, and Brooklyn Art Association. In addition to his artistic career, he studied law at Columbia University in 1890 and was admitted to the bar in 1902. Robbins spent his later years in New York City, where he remained active in both art and civic life.