Ružica Church, Orthodox church in Belgrade Fortress, Serbia.

Ružica Church is an Orthodox church set within Belgrade Fortress in Serbia, built into the stone walls of the medieval complex. It sits along a stepped pathway between the upper and lower parts of the fortress, with two bronze warrior statues flanking its entrance.

The church dates to the 15th century and was damaged and rebuilt several times as Belgrade changed hands between different powers over the centuries. The most recent major renovation took place in 1925, after the damage caused by World War I.

The name Ružica comes from the much older pagan festival of Rosalia, when participants were sprinkled with rose petals; because the Orthodox Trinity feast coincided with it, many medieval Serbian churches were popularly called Ružica. Folk tradition holds that three sisters, Ružica, Marica and Cveta, each built a church in the fortress. The spring of Saint Petka, believed to heal blindness, drew Orthodox, Catholic and Muslim pilgrims, and the church's slava day opened the fortress gates to civilians.

The church is reached on foot via a stepped path inside the fortress, so comfortable shoes are a good idea as the ground can be uneven. It is easy to find because it sits on the route between the main fortress gates, making it a natural stop on a walk through the grounds.

The chandeliers hanging inside were made by Serbian soldiers after World War I using materials collected from the battlefield, including shell casings, sword blades, and parts of cannons. These objects were repurposed directly into the church's fittings rather than being melted down or discarded.