Ungmennafélagið Sindri, commonly known as Sindri, is an Icelandic multi-sports club from the town of Höfn located on the east coast of Iceland. It fields departments in basketball, football, gymnastics, swimming, track & field and volleyball.
After a hiatus, Sindri's basketball department was re-started in 2005 with the arrival of Arnar Guðjónsson and Skúli Ingibergur Þórarinsson. On April 14, 2018, Sindri won Division II and achieved promotion to Division I. In May 2018, the club hired Mike Smith, the former assistant coach of the Luxembourg men's national basketball team, as their head coach. On 1 February 2019, the team parted ways with Smith after the team winning only 1 if its 15 games. Skúli Ingibergur Þórarinsson took over from Smith on interim basis. In June 2021 the club hired former Úrvalsdeild Karla Coach of the Year Israel Martín as head coach.