Gill is a
lunar crater that is located near the southeastern limb of the
Moon. Due to its proximity to the edge of the Moon as seen from the
Earth, this crater is viewed nearly from the side and it can become hidden from sight due to
libration. The crater lies to the southwest of the irregular
Mare Australe, and southeast of the prominent crater
Pontécoulant. To the southwest of Gill is the crater
Helmholtz.