•
Mayall II,
Mayall III,
Mayall IV,
Mayall V, and
Mayall VI globular clusters in the Andromeda Galaxy •
Mayall's Object, or
Arp 148, a peculiar galaxy, or pair of colliding galaxies •
2131 Mayall, a minor planet •
Nicholas U. Mayall Telescope, telescope at the Kitt Peak National Observatory