Cognomen ปลาทู (ปลาทู 
, Mackellar 
, Ploochoo ) , around the globe, is quite a rare family name. The family name ปลาทู is characteristic of Bermuda, where it is quite a rare surname, Australia, and the United Kingdom, where it is a rare surname. Measured by absolute frequency, it is commonest in the United Kingdom, the United States, and Australia.