Magnis

Magnis may refer to:


 * Magnis (Carvoran), the form of the name Magnae Carvetiorum (Carvoran) that appears in the Antonine Itinerary
 * Magnis (Kenchester), the form of the name Magnae (Kenchester) that appears in the Antonine Itinerary
 * Magnis Ridge, rock ridge in Antarctica
 * Magnis Valley, ice-free valley in Antarctica