Saint James church in Kőszeg, Medieval filial church in Kőszeg, Hungary.

Saint James Church in Kőszeg is a three-nave Gothic church with a tower built in the 15th century above the sanctuary. Chapels between the interior buttresses were completed in 1758, and the exterior was given its Baroque appearance during the 1807 renovation. A small Sanctus turret was added in 1697.

A minorite church destroyed in the 1289 siege probably stood on this site; the Franciscan monastery was rebuilt under Louis the Great. The Garai family had the church rebuilt between 1403 and 1407, and a snake keystone held to be their crest animal survives from that work. The Reformation brought occupation, and the medieval altar was demolished in 1653; Bishop György Széchenyi of Győr obtained the church's return in 1671. Jesuits served here from 1675, Piarists from 1777 to 1815, Benedictines from 1815 to 1948.

The church's name day is celebrated on 25 July, the feast of Saint James, with a parish kermesse. The high altar made by Palatine Pál Esterházy in 1693 held a figure of Saint James until 1735, when it was replaced by a Madonna statue. The carved pews date from 1719.

The church is open to visitors during regular hours for both worship services and sightseeing. Ask locally about guided group tours if you want detailed information about the interior features and their meanings.

The 1937 restoration uncovered the church's main Gothic frescoes in secco technique: the Madonna of Mercy, Saint Christopher and the Three Kings. The restorer Dex Deéd Ferenc also painted local figures of his day into the work, among them bishop Grősz József of Szombathely, abbot Kelemen Krizosztom of Pannonhalma and mayor Vitéz Nagy Miklós.