Otavite is a rare cadmium carbonate mineral with the formula CdCO3.

Otavite crystallizes in the trigonal system and forms encrustations and small scalenohedral crystals that have a pearly to adamantine luster.

The color is white to reddish to yellow brown.

Associated minerals include azurite, calcite, malachite, and smithsonite.

It was first described in 1906 from the Tsumeb district near Otavi, Namibia.