Robert Napuʻuako Boyd ([ˈɹɑb.ɚt napuʔuako boyd]; September 2, 1864 – September 9, 1914) was a Native Hawaiian insurgent leader during the latter years of the Kingdom of Hawaii. Educated under the government-funded study program of King Kalākaua, he attended the Royal Naval Academy at Livorno in Italy. He became a friend of Robert William Wilcox, another Hawaiian student enrolled at Turin. They were both recalled back in Hawaii after the government stopped funding their education. Back home, he participated with Wilcox in the unsuccessful Wilcox rebellion of 1889 aimed at restoring political power to the king.