Hambergite (Be2BO3OH) is a beryllium borate mineral. It is named after the Swedish explorer and mineralogist Axel Hamberg. The mineral occurs as white or colorless crystals.

Hambergite occurs in beryllium bearing granite pegmatites as a rare accessory phase. Beryl, apatite, danburite, zircon, fluorite feldspar and quartz are some of the minerals it is associated with.

It was first described in 1890 by the mineralogist and geographer W.C.Brogger.