Jarun (pronounced [jaˈrun]) is a neighborhood in the southwestern part of Zagreb, Croatia.

It was named after Lake Jarun, formed by the Sava River, now located on the southern edge of the neighborhood.

The lake is the location of the Jarun sports and leisure center, where people can row, paddle, sail, surf, swim, jog, bike, roller skate, and skateboard.

Also, around the lake Jarun there is a "Walk of fame" with the pictures and biography information of great athletes of Croatian sport.

Development increased in 1987 due to the building of the sports and leisure center (because of the Universiade in Zagreb the same year).