Ululani Lewai Peleiōhōlani Baker (1858 – October 5, 1902) was a Hawaiian high chiefess and the last Governess of the island of Hawaii from 1886 to 1888.

According to tradition, Kalaniʻōpuʻu hanged his kahuna Naonaoaina after the latter was unable to dig freshwater from the cliffs of Mōʻīlele, near Kalae in the district of Kaʻū.

[5] During the reign of King Kalākaua, Ululani was appointed as Governess of the island of Hawaii to succeed Princess Poomaikelani, sister of Queen Kapiolani.

Island governors traditionally had the power to appoint police officers, manage governmental lands, supervise tax collectors and collect revenues for the Crown.

Under this act, Queen Liliuokalani, the sister and successor of Kalākaua, restored the position during the twilight of the monarchy but only appointed males governors.

[2][6][7] Her husband entered the cattle ranching business after the end of the monarchy and the couple resided on the island of Hawaii.

After a long illness, Ululani died, on October 5, 1902, at her husband's Mahiki Ranch, near Waimea, Hāmākua.