Tui Cathedral is a late-Romanesque and Gothic-style Roman Catholic church in the town of Tui, in Galicia, Spain.

It is located at San Fernando square, in the center of the town.

Construction began in the 12th century and the northern portal and layout derive from this age.

The main chapel located in the choir was completed in 1699 by Castro Canseco.

The interior has a large prominent retablo de la Expectacion, and a large altar of relics in the Chapel of the Relics.