Elisabeth Olin (née Lillström) (December 1740 – 26 March 1828) was a Swedish opera singer and a music composer. She is referred to as the first Swedish Opera prima donna. She was a court-singer (Hovsångare). She was the first female member of the Royal Swedish Academy of Music (1782). Together with Fredrique Löwen, she is referred to as the most successful Swedish woman stage artist in the 18th century.

Her father, Petter Lillström, was a musician, an organist, and played in the theatre orchestra in Bollhuset. Her mother Elisabeth Lillström was one of the first professional native actresses in Sweden, the prima donna of the troupe and a member in the board of directors that run the theatre of Bollhuset in 1740–1753. Elisabeth Olin debuted as a child-actor on the stage of Bollhuset alongside her mother at the age of seven under the name Betty Lillström in the part of Alfhild in Syrinx in 1747, called Sweden's first native Opera comique, and was very popular, often described as one of the most valuable members of the staff even though she was not an adult, but in 1753, the theatre was reserved for the French troop hired by the queen, ending the first experiment of a national theater. The parents of Olin then joined the Stenborg Troupe