Lars Olof "Olle" Gustaf Ljungström (12 August 1961 – 4 May 2016) was a Swedish singer, songwriter, and musician.

Ljungström began his musical career as vocalist and guitarist in the Swedish rock group Reeperbahn.

The group, which initially also consisted of Dan Sundquist (bass), Eddie Sjöberg (guitar) and Peter Korhonen (drums), made their self-titled debut album in 1979.

The group made three more full-length albums, Venuspassagen (1981), Peep-Show (1983) and Intriger (1983) before splitting up in 1984.

Ljungström has also appeared on songs by other artists from time to time; he contributed to the group Wilmer X's record Hallå Världen, with the song "Jag är bara lycklig när jag dricker" (translates to "I'm only happy when I'm drinking").