The ASSA ABLOY Group is a Swedish lock manufacturer, and is the world's largest lock manufacturer by sales volume.
ASSA ABLOY was formed in 1994 when Assa AB was separated from Swedish security firm Securitas AB. Shortly thereafter, the Finnish high-security lock manufacturer Abloy Oy (a subsidiary of the Finnish company Wärtsilä) was acquired. The company was introduced to the Stockholm Stock Exchange later the same year. ASSA ABLOY has since made over 150 acquisitions. A few of these are Yale lock, Sargent and the high-security lock firms of Medeco in the U.S., Mul-T-Lock in Israel, Fichet-Bauche in France, and VingCard Elsafe International in Norway.