Haystack Mountain, located in Haystack Mountain State Park, is a 1,716-foot-high (523 m) mountain in the town of Norfolk, Connecticut.
The 34-foot-tall (10 m) Haystack Mountain Tower, built in 1929 and listed on the National Register of Historic Places, sits upon it. The tower provides a view over the town of Norfolk and the neighboring town of Canaan.
Common forms of wildlife found on the mountain include raccoons, bears, deer, coyotes, opossums, skunks and foxes. The dominant plant life include mountain laurel (the state plant), pine trees and maples.