Helgi Jóhannsson (23 June 1929 – 4 April 2003) was an Icelandic basketball coach and player. He was one of the main pioneers of modern basketball in Iceland and was a founding member of Íþróttafélag Reykjavíkur's basketball department As a coach, Helgi won a record 8 men's national championships from 1954 to 1964. He played with ÍR in the 1964–65 FIBA European Champions Cup (now called EuroLeague), the first time an Icelandic team competed in a continental competition. He was the head coach of the Icelandic men's national basketball team on three occasions, from 1961–1967, in 1970 and in 1978.