Colonel Charles Hastings Judd (September 8, 1835 – April 18, 1890) was a Hawaiian businessman, rancher, courtier and politician who was born, lived, worked and died in the Kingdom of Hawaii.

He served as chamberlain and colonel of the military staff of King Kalākaua and traveled with the monarch on his 1881 world tour.

[1][2] Charles' younger brother Albert Francis Judd served as Chief Justice of the Hawaii Supreme Court.

His classmates included fellow missionary descendant William Nevins Armstrong and the future King Kalākaua, both of whom developed a lifelong friendship with Judd during their childhood.

From 1854 to 1856, Judd returned to Punahou and traveled with his mother and two sisters to the United States via the Isthmus of Panama to visit his relatives in 1855.

[6] On September 7, 1873, the Royal Guards mutinied at ʻIolani Barracks due to their resentment of Judd and the Hungarian drillmaster Captain Joseph Jajczay.

Unable to control their subordinates, Judd and Jajczay were beaten and attacked by the angry troops and a demand for their removal was sent to the king.

[13] In this capacity, Judd traveled with Kalākaua on his 1881 world tour along with their childhood classmate Armstrong and Colonel George W. Macfarlane, the king's aide-de-camp.

[14][15] Judd's dark complexion and physical resemblance to Kalākaua led a few people, including Qing politician Li Hongzhang to mistake him for a Native Hawaiian, and the 5th Earl Spencer mistook him for the king.

Judd regarded his removal from office as a "defection of the king, a lifelong friend, [which] preyed upon his mind with devastating effect and his health".