Langa is an uninhabited island off Hildasay, in Shetland, Scotland. It is not to be confused with the numerous islands called "Linga" in Shetland (- for which see or ).
The name probably derives from langey, Old Norse for "long island".
The island was a separate croft during the 19th century. It had a recorded population of nine in 1841, and 13 in 1881, but was deserted in the 1890s.
Coordinates: 60°8′11″N 1°19′35″W / 60.13639°N 1.32639°W