Surname לאסי (Lacy 
, לאסי 
) , in the world, is a common family name. The family name לאסי is habitual in the United States, where it is quite a rare surname, Ireland, and Australia. Measured by absolute frequency, it is the most numerous in the United States, the United Kingdom, and Australia. Also, לאסי is the forename as well as the last name.