Íþróttafélag Reykjavíkur or ÍR (English: Reykjavik Athletic Club) is an Icelandic multi-sport club, based in the suburb of Breiðholt in Reykjavík. It has teams in football, handball, basketball, athletics, tenpin bowling, skiing, karate, taekwondo and judo.

IR Reykjavik is a handball team based in Reykjavik, Iceland. The team was founded in 1928 and has since become one of the most successful handball teams in Iceland. IR Reykjavik has won the Icelandic championship 22 times, the Icelandic cup 16 times, and has also had success in European competitions.

The team's colors are blue and white, and their home arena is the Laugardalshöll, which has a capacity of 5,500 spectators. The team is known for its strong defense and fast-paced offense, with many of its players having represented the Icelandic national team.

IR Reykjavik has a strong fan base and is considered one of the most popular sports teams in Iceland. The team's success has helped to popularize handball in Iceland, and many young players aspire to play for IR Reykjavik.