Waitaha may refer to:
Waitaha (Bay of Plenty iwi), a Māori tribe of the Bay of Plenty region of New Zealand Waitaha (South Island iwi), a historic Māori tribe of the South Island of New Zealand Waitaha penguin (Megadyptes waitaha), an extinct species of penguin Waitaha, the Māori name for the Canterbury Region of the South Island of New Zealand Waitaha River, a river in New Zealand's South Island