Of Irish origin.

Feminine form of the Irish name Sean, which in turn is an Irish form of John.

Other forms of the name are: Seanna, Shawna, Seann, Sianna, Ioanna, Joan, Ivana, Juana.

Famous bearers are Seana McKenna, Seana Kofoed, Seana Kerslake, Seana Gorlick.