Cognomen Lacha (Lacha 
, Лаша 
) , all around the world, is quite a rare family name. The cognomen Lacha is habitual in Czechia, where it is quite a rare surname, Tanzania, and Austria, where it is a rare surname. In absolute terms, it is the most numerous in India, Tanzania, and Algeria. More frequently, Lacha is the forename as well as the last name.