水獭属（学名Lutra）包括两种产于欧洲和亚洲的水獭。

• 欧亚水獭 Lutra lutra
  • 日本水獭 Lutra lutra nippon
• 毛鼻水獭 Lutra sumatrana

Lutra is a genus of otters, one of seven in the subfamily Lutrinae.

The genus includes these living species:

The genus most likely evolved in Asia during the late Pliocene epoch; the oldest fossil belonging to the genus is of the species L. palaeindica, and dates from the late Pliocene.