Isaac Walton Taber (c. 1857 – February 12, 1933) was an American illustrator active in the late 19th and early 20th centuries. He was also known as "Walton Taber." As his work was often credited to "I. W. Taber," he has been confused with the photographer Isaiah West Taber (1830-1912).
Born in New Bedford, Massachusetts, Taber was the third of four sons born to merchant Isaac W. Taber and Lydia (née Hart) Taber. He studied at the Cooper Union Art School and exhibited at the Pennsylvania Academy (1880-1881; 1893). He was known for his pen and ink work drawn from photographs; he created 250 illustrations for the four-volume Battles and Leaders of the Civil War.
Taber's illustrations were published in magazines including St. Nicholas and Century. Tabor illustrated Rudyard Kipling's Captains Courageous, Frank T. Bullen's Cruise of the Cachalot, and the 1928 edition of Herman Melville's Moby Dick. 
Taber died in New York City on February 12, 1933.
- Eason, James A. (April 2005). "Book Review: Taber: A Photographic Legacy" (PDF). Views, the Newsletter of the Visual Materials Section, Society of American Archivists. 19 (1): 19.
- Blasdale, Mary Jean (1990). Artists of New Bedford: A biographical dictionary. New Bedford: Old Dartmouth Historical Society.
- Reed, Walt (2001). The Illustrator in America, 1860-2000. The Society of Illustrators. p. 39.
- Falk, Peter Hastings (2001). Who was who in American art (Vol. 3 ed.). Madison: Sound View Press.
- Battles and Leaders of the Civil War, 1887 Internet Archive
- Captains Courageous, 1899 Internet Archive
- The Cruise of the Cachalot, 1906 Internet Archive