Dreifaltigkeitskirche, Gothic parish church in Monreal, Germany.

The Dreifaltigkeitskirche is a Gothic parish church in Monreal, built of quarry stone in 1460. Its west facade carries a bell tower with an eight-sided pyramidal roof, and high-set buttresses divide the outer walls. The interior, about 32 meters long including the vestibule and choir, has a single nave of three unequal bays and a five-sided closed choir.

The church was built in 1460 as the church of a collegiate foundation in Monreal. The Gothic sacrament house dates from 1460/1464, and the apostle altar was donated in 1482. The neo-Gothic high altar was made in 1876 by sculptor F. Ernst of Koblenz.

The twelve apostle sculptures on the celebration altar come from the Apostle Altar donated in 1482, not from the sacrament house of 1460/1464, which is decorated with canopies, pinnacles and crocketed tracery arches. The neo-Gothic high altar was carved in 1876 by the sculptor F. Ernst of Koblenz, with Agnes and Aloysius flanking it.

The church stands on the bank of the Elz below the Große Burg, also called Löwenburg. A vestibule beneath the west tower leads into the nave; the baptismal chapel opens off its right side through a pointed arch, and the sacristy adjoins the right of the choir. The interior, vestibule and choir included, is about 32 m long and the nave just under 8 m wide.

The vault ribs inside rest on consoles carved with faces, a detail many visitors overlook. The choir's net vault displays the coat of arms of the Lords of Virneburg, showing connections to the local noble family.