St. Audomar, Romanesque Revival church in Frechen, Germany.

St. Audomar is the Roman Catholic parish church of Frechen, rebuilt in 1857 to plans by cathedral master builder Ernst Friedrich Zwirner in Neo-Romanesque forms, with the exception of the tower. In 1909 the tower was demolished, the nave extended by one bay to the west and a new tower added. The interior holds a Klais organ with three manuals and 38 stops, installed in 2005.

The church was first mentioned in a 955 biography of Saint Audomar, and its tithes and revenues were granted to Saint-Bertin Abbey and Saint-Omer chapter by a charter of Charles the Bald in 877. It burned during the Truchsessian War (1583–1588); tower and nave were renewed in 1714, the choir kept. In 1857 the church except the tower was demolished and rebuilt in neo-Romanesque forms to plans by cathedral architect Ernst Friedrich Zwirner. In 1909 the tower was taken down, the nave lengthened by one bay westward and a new tower added.

The windows display artistic works from different eras, filling the interior with light and color that shapes the prayer experience of visitors. Each window tells through its design of the artistic development across multiple generations.

The building is easy to access, and the interior spaces are open to visitors during service hours. The architecture of the church allows you to appreciate the organ and windows from various viewpoints.

The entrance area houses ancient burial monuments, including a sandstone tomb dedicated to Hermann Spies von Büllesheim. These monuments offer insights into the local history and people connected to this place of worship.