This article is about the physical traprock hill formation known as East Rock. See East Rock (neighborhood) for information on the residential neighborhood of New Haven known by the same name.

East Rock is a traprock hill that rises to the northeast of downtown New Haven, Connecticut, USA. Its approximate elevation is 400 feet, and it consists largely of reddish and blackish basalt, much like its companion West Rock. It is easily visible from many parts of the city and some parts of surrounding towns, especially the prominent Soldiers and Sailors Monument which rests on its plateau-like top. East Rock has been designated as public parkland by the city of New Haven, and contains many hiking trails, woodlands, and a notable "Great Steps" edifice which has been built to facilitate climbing the hill's steep cliffside.