Surname צ'ייני (Cheyne 
, Cheney , צ'ייני 
) , around the world, is a common last name. The family name צ'ייני is habitual in Australia, where it is quite a rare surname, New Zealand, and the United States. Measured by absolute frequency, it is commonest in the United States, the United Kingdom, and Australia. Very seldom, צ'ייני is the forename as well as the last name.