白桉（学名：Eucalyptus alba）为桃金娘科桉属下的一个种。

Eucalyptus alba, or white gum, is a species of Eucalyptus which is native to Australia, Timor, and New Guinea. A dominant tree of open woodland, it reaches 18 m (59 ft) high with a spread of up to 15 m (49 ft).