Lars Erik ("Lasse") Dahlquist (born 14 September 1910 in Örgryte (grew also up in Lidingö), died 14 October 1979 on Brännö, Gothenburg archipelago due to laryngeal cancer) was a Swedish composer, singer and actor. He was married to Inez Margareta Dahlquist, née Lindquist (1911–2004) from 1936 and they had a son; the saxophonist Robert "Bob" Dahlquist (2 September 1938–6 September 2005). On Saltholmen, at the terminal of the boats of Styrsjöbolaget, there is a place called Lasse Dahlquists Plats.
When he was a child, during the summers he was at his grandfather's farm Langegården on Brännö where he built his own home. He worked at Sven-Olof Sandberg's music publishment Svenska Noter and 1931 he bagan recording gramophone records. In 1977 he received the Evert Taube award.