Maria Albertina Gelhaar née Laurin (1858-1920)[1] was a Swedish operatic soprano. She made her debut in September 1881 at Stockholm's Nya Teatern in Mozart's one-act opera Der Schauspieldirektor. In February 1883, she appeared for the first time at the Royal Swedish Opera as Zerlina in Mozart's Don Giovanni. Engaged by the company until 1888, her roles included Fiametta in Franz von Suppé's Boccaccio, Papagena in Mozart's The Magic Flute and Mercedes in Bizet's Carmen.