Lasi or LASI may refer to: Lasi people, an ethnic group of Pakistan Lasi language, an Indo-Aryan language of Pakistan Lasi (letter), a letter of the Georgian alphabet LasI, or Acyl-homoserine-lactone synthase, an enzyme Johann Lasi, a World War I pilot
See also Laasi, a village in Estonia Lassi (disambiguation) Lasy in Poland Iasi (disambiguation)