Ribnjak is a neighborhood in the Gornji Grad - Medveščak district of Zagreb, Croatia, directly east of the Zagreb Cathedral, five minutes of walk away from Ban Jelačić Square.
The park had been a part of the city fortification since the 15th century, but it was projected in its current form and built in 1830 by Zagreb bishop Aleksandar Alagović and architect Leopold Klingspogle. The park was named after the fishponds in the area (Croatian: ribnjak, pl. ribnjaci). However, since late 19th century, parts of the park have been slowly chipped away to make way for new buildings and infrastructure, such as the widening of Ribnjak Street. From 14th century on, the size of ponds had continuously been artificially decreased, until the last pond (in the southern end) was filled and paved over to make way for Josip Lang Square in 1870. Until 1946 the park had been private property of the Zagreb archdiocese. After the World War II it was expanded and opened for public, becoming a prime location in the heart of Zagreb.
ZET tram tracks in the Ribnjak Road pass through the neighborhood, carrying lines 8 and 14. A tram station is located on the Grškovićeva and Ribnjak intersection in the northern part of the neighborhood. The southern part is served by the Draškovićeva Street tram transfer station. The neighborhood is also served by bus routes 106, 201, 226 and 238. All routes pass through Zvonarnička and Degenova Street, delineating the north border of the neighborhood.