The khong mon is a gong-circle instrument that is associated with the Mon people of mainland Southeast Asia. It produces the same range of pitches as the more common khong wong gong circle; but rather than resting on the ground; the wooden frame of the khong mon extends into the air in the shape of a horseshoe.

The image of a half-man; half-bird figure carved onto the frame is traditional; and is meant to symbolize a celestial musician. The frame is also typically decorated lavishly in gold paint and glass inlay.

Khong mon are featured in a special type of Thai ensemble called pi phat.