Alessandro Poglietti (early 17th century – July 1683) was a Baroque organist and composer of unknown origin. In the second half of the 17th century Poglietti settled in Vienna, where he attained an extremely high reputation, becoming one of Leopold I's favorite composers. Poglietti held the post of court organist for 22 years from 1661 until his death during the Turkish siege that led into the Battle of Vienna.