The Sint-Annakerk is a Romanesque, partly Gothic, Roman Catholic church in Aldeneik, Belgium. The church was begun in the 12th century and consists of a 3-aisle basilica in Mosan style without transepts. Originally, the church was part of the Aldeneik monastery. Since the 18th century it has been dedicated to Saint Anne.
Around the year 730 the nuns Harlindis and Relindis set up the Benedictine monastery of Eike on their father Adelard's estate. The monastery was destroyed by Vikings in the 9th and 10th century. Emperor Otto I donated the monastery to the Prince-Bishopric of Liège in order to prevent local nobleman from seizing control of the monastery's properties. A collegiate chapter was founded, which in the 12th century built the Romanesque church which partly survives in the present building. The westwork tower and the Gothic choir date from the 13th century, as do the primitive red and ochre murals, the oldest in Belgium.