Henry Clay Ide (September 18, 1844 – June 13, 1921) was a U.S. judge, colonial commissioner, ambassador, and Governor-General of the Philippines.
Born in Barnet, Vermont in 1844, Ide graduated from Dartmouth in 1866, where he was named valedictorian, and was admitted to the bar in 1871. He practiced law in St. Johnsbury, Vermont from then until 1891.
From 1876 to 1878, Ide was State Attorney for Vermont. From 1882 to 1885 he was a member of the Vermont State Senate.
President Benjamin Harrison appointed Ide Presidential Commissioner to Samoa in 1891. The formal title of the post was American Land Commissioner in Samoa, one of three representatives (of the United States, Germany, and Great Britain) responsible for adjudicating land claims by foreigners in the islands, as provided for in the Treaty of Berlin (1889). Ide reached Apia on May 16, 1891, but only held the office for six months, until he resigned because of a serious illness in his family and left the islands on November 12, 1891. Robert Louis Stevenson wrote to him two days beforehand, saying "I hear with great regret of your departure. They say there are as good fish in the sea as ever came out of it, but I doubt if they will come to our hook. It is not only that you have shown so much capacity, moderation, tact, and temper ; but you have had the talent to make these gifts recognized and appreciated among our very captious population. For my part, I always thought your presence the best thing that the treaty had brought us."
Ide was to return to the islands in 1893. This time it was as Chief Justice, another position provided for by the Treaty of Berlin. He accepted the appointment in August, and sailed for the islands two months later. As Chief Justice, Ide presided over trials of both native Samoans and foreign nationals of the three Treaty of Berlin signatories. He also had the power to recommend criminal and taxation legislation to the government of Samoa. He remained Chief Justice until 1897. He resigned in 1896, but there was a delay in the arrival of his successor, requiring him to continue in office until 1897-05-13. The Samoa Weekly Herald noted him, upon his departure, as a just and able judge. Similarly, King Malietoa told Ide that "You will not be forgotten in Samoa, you will be remembered as the good Chief Justice who knew our ways and laws and customs and who was kind to us".