The origin of surname Thomey is County Cork in Ireland.

The name Thomey derives from gaélico O Tuama .

Some variations of this surname are: Toomie, O'Toomie, Twomey, O'Twomey, Twomy, O'Twomy, Twony, Toomey, O'Toomey, Toomy, O'Toomy, Twomie, O'Twomie, Twome, O'Twome, Toomee, O'Toomee, Tome, O'Tome, Thomey and others.