Last name Петти (Pattie 
, Petty , Петти 
) , all around the world, is a common cognomen. The family name Петти is habitual in Bahamas, where it is quite a common surname, the United States, and the United Kingdom, where it is quite a rare surname. In absolute terms, it is commonest in the United States, the United Kingdom, and Australia. Much less frequently, Петти is the forename as well as the last name.