The Lord Howe swamphen or white gallinule (Porphyrio albus) was a large bird in the family Rallidae endemic to Lord Howe Island, Australia. It was similar to the purple swamphen, but with shorter and more robust legs and toes. Its plumage was white, sometimes with a few blue feathers, and it was probably flightless, like its other close relative the takahe. Similar, entirely blue birds were also described, but it is not clear if they belong to this species or are simply purple swamphens (which can also be found on the island). The feathers on the two extant skins are white.