| Nancy Wahinekapu Sumner | |||||
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| Born | March 9, 1839 Honolulu, Oahu | ||||
| Died | January 10, 1895 (aged 55) Honolulu, Oahu | ||||
| Spouse | Charles Kuinao Ellis | ||||
| Issue | William Kualiʻi Sumner Ellis Victoria Kualiʻi Sumner Ellis Buffandeau John Kapilikea Sumner Ellis | ||||
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| Father | William Keolaloa Kahānui Sumner | ||||
| Mother | Manaiʻula Tehuiariʻi | ||||
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Nancy Wahinekapu Sumner (March 9, 1839 – January 10, 1895) was a high chiefess during the Kingdom of Hawaii of Hawaiian, Tahitian and English descent. She served as lady-in-waiting of Queen Emma and was one of the most prominent ladies of the Hawaiian royal court during the reigns of Kamehameha IV and Kamehameha V.