Kaʻahumanu may refer to:
Early rulers of the Kingdom of Hawaiʻi: Kaʻahumanu Queen Kaʻahumanu I (1768–1832) Kaʻahumanu II Elizabeth Kīnau, or Kaahumanu II (c. 1805–1839) Kaʻahumanu III Miriam Auhea Kekāuluohi, or Kaahumanu III (1794–1845) Kaʻahumanu IV Victoria Kamāmalu, or Kaʻahumanu IV (1838–1866)
Other people: Virginia Kaihikapumahana Wilcox known as Kahoa Kaʻahumanu Lani Ka'ahumanu Kapumahana Kaʻahumanu Walters (born 1979)
Other: Kaʻahumanu Society civic society Queen Kaʻahumanu Highway, part of the Hawaii Belt Road Kaʻahumanu Avenue, Hawaii Route 32 on Maui
See also Kuhina Nui office held by above rulers