Surname Kaihau (Kaihau 
) , in the entire world, is a rare family name. The surname Kaihau is characteristic of New Zealand, where it is a rare surname, Australia, and the United States, where it is an extremely rare surname. Very seldom, Kaihau is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kaihau | United Kingdom, United States, New Zealand, India, Australia |
| kaihau te rangikakapi maikara te whaiti Ngati Kahungunu woman of mana, NZ (b. 1863) |
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Da, Puaha, David, Diane, Tohuia, Napie, Harry, Floyd, Marley, Silipa, Siaosi, Alison, Robert, Rhonda, Jaedan, Neomai, Metiria, Michael, Mikayla, Cameron, Corrine, Kaitlyn, Alisi, Soane, Sonny, Seini, Sam, Ben, Pua, Mano, Mote, Sioi, Alan, Kasi, Keri, Kiri, Ruperta, Ryan, Lile, Lolo, Luke, Toni, Tina, Hans, Marie, Matiu, Malia, Susan, Leia, and Lesieli