Eta<sup>2</sup> Hydri b (÷<sup>2</sup> Hyi b, ÷<sup>2</sup> Hydri b), commonly known as HD 11977 b, is an extrasolar planet that is approximately 217 light-years away in the constellation of Hydrus. The presence of the planet around an intermediately massive giant star provides indirect evidence for the existence of planetary systems around A-type stars.