It is slightly odd but being uncommon, it would be nice. It is considered a boy name though, meaning 'A rooster'.
Ed Hahn's birth name is William Edgar Hahn.
Gunnar Hahn's birth name is Gunnar Arvid Hahn.
Horace Hahn's birth name is Horace L. Hahn.
Jess Hahn's birth name is Jesse Beryle Hahn.
Scott Hahn's birth name is Scott Austin Hahn.
Edith Hahn Beer's birth name is Edith Hahn.
It is Nooldes Hahn
Gisela Hahn's birth name is Gisela Drenkhan.
Eliska Hahn's birth name is Eliska Dawn Prince.
Jasmin Hahn's birth name is Yasmin Ait-Jidar.
Thich Nhat Hahn's birth name is Nht, Hanh.
Manny Nathan Hahn's birth name is Manuel Jacob Nathan.