Church of St. Demetrius, Orthodox church in Zemun, Belgrade, Serbia.

The Church of St. Demetrius, known as Hariš's Chapel, stands on the Zemun Orthodox Cemetery. The neo-Byzantine chapel has a Greek-cross plan with a single dome at the crossing. It is built on two levels: a mortuary whose entrance lies beneath the stairs leading up to the chapel, and the chapel proper above it.

Built between 1874 and 1878, the chapel was funded by the Zemun merchant Grigorije Hariš according to the will of his wife Marija, born Petrović, whose family saint was Demetrius. It was destroyed in World War I and restored in 1931, consecrated on 28 August.

The chapel is dedicated to Saint Demetrius, protector of the Petrović family. Marija Petrović, wife of merchant Grigorije Hariš, left a bequest for its construction, and she is regarded as its founder. The iconostasis, carved by Jovan Kistner and gilded by Samuel Kolmajer, was the last work of painter Pavle Simić, made in 1874 in the classical style.

The church is located in Zemun and is accessible to visitors, though certain times are reserved for religious services. It is best to check opening times and be respectful of any ongoing worship when visiting.

The building is registered as a protected cultural monument in Serbia under designation SK 982, underscoring its historical and architectural value. This protection status ensures that the structure will be preserved for future generations.