St. Johanneskirche, Religious heritage monument in Deutz, Germany.

St. Johanneskirche is an evangelical church on Tempelstraße in Deutz, built from 1859 and consecrated on Reformation Day 1861 to a design by Robert Ferdinand Cremer, with Eduard Kramer responsible for the mix of classicist and neo-Romanesque elements following the Eisenacher Regulativ. An eight-sided tower and portal rise from the three-part west front. The interior was rebuilt in stages after the 1942 fire, with the curved organ gallery added in 1952 and the tower restored to its original height in 1970.

The design for a church in the then independent Deutz came from Robert Ferdinand Cremer in the mid-19th century, as the only Protestant church for the right-bank communities stood in Mülheim. Construction began in 1859, and the church was consecrated on Reformation Day 1861. Eduard Kramer built it in a mix of classicist and neo-Romanesque elements following the Eisenacher Regulativ. It burned out completely in the night of 31 May to 1 June 1942, and a demolition bomb caused further damage in 1943. Rebuilding came in stages: the curved organ gallery in 1952, the organ in 1963, and the tower at its original height in 1970.

The name refers to John the Baptist, not to a founder or donor. The church serves the Protestant congregation of Köln-Deutz/Poll within the Kirchenkreis Köln-Rechtsrheinisch of the Evangelical Church in the Rhineland, sharing this role with the Friedenskirche in Mülheim. Its four bells were cast by the Rincker bell and art foundry.

The building is centrally located in the Deutz neighborhood and is easily accessible on foot. Keep in mind that regular religious services take place, which may affect visiting hours.

The church burned out completely in the night of 31 May to 1 June 1942, and a demolition bomb caused further damage in 1943. The tower only regained its original height in 1970, twenty-eight years after the fire.