Montes Secchi (latin for "Secchi Mountains") is minor range of lunar mountains that located near the northwestern edge of Mare Fecunditatis. This roughly linear formation of low ridges grazes the northwestern outer rim of the crater Secchi, the formation from which this range gained its name. (The crater is named after Pietro Secchi, a 19th century Italian astronomer.) The ridges trend from southwest to northeast.
The selenographic coordinates of the range midpoint are 3.0° N, 43.0° E, and they lie within a diameter of 50 km. This is smaller than the diameter of the crater Taruntius, located to the northeast of the mountains.