Mons Hadley is a massif is the northern portion of the Montes Apenninus, a range in the north hemisphere of the Moon. The selenographic coordinates of this peak are 26.5° N, 4.7° E. It has a height of 4.6 km and a maximum diameter of 25 km at the base.

To the south of this mount is a valley that served as the landing site for the Apollo 15 expedition. To the southwest of this same valley is the Mons Hadley Delta (δ) peak. West of these peaks is the sinuous Rima Hadley rille.

This mountain was named for John Hadley.

Satellite craters

By convention these features are identified on Lunar maps by placing the letter on the side of the crater mid-point that is closest to Mons Hadley.