Atom (surname)
Atom is a Meitei family. It is native to Ancient Kangleipak (Antique Manipur). People of this family mainly live in Manipur, India.
Other websites
http://www.mychildnames.com/mobile/similar-surname.aspx?surname=Atom
http://www.indiachildnames.com/mobile/similarfamilyname.aspx?surname=Atom
References
Meitei surnames