Ragnar Bjarnason, also known as Raggi Bjarna, (22 September 1934 – 25 February 2020) was an Icelandic singer.

[2] Ragnar started as a drummer in his father's band at the age of 13.

In 1955–1956, he became vocalist of Hljómsveit Svavars Gests (a relation that would go on until 1960) and in 1956, became a singer with KK sextet that continued until 1959.

The band played for 19 consecutive years at Hótel Saga.

In 1972, he also founded Sumargleðin that toured the country and gained great national fame.