Ripley Hill is a mountain in central New York on the divide between the Skaneateles Lake and Otisco Lake watersheds. Rising 1,986 feet, it is among the highest points in Onondaga County, though slightly lower than nearby Fellows Hill and Morgan Hill. It is noted for broad views to the north and east, and part of its summit landscape is protected through a 109-acre nature preserve managed by the Central New York Land Trust. Near Spafford Forest, an Onondaga County preserve with hiking and dirt bike trails, the hill is reached by a seasonally maintained public dirt road, while adjoining land remains privately owned and may be posted.