William Harrison "Harry" Anderson (June 25, 1870 – June 26, 1950) was an American missionary for the Seventh-day Adventist Church. He arrived in Africa in 1895 and established the Solusi Mission near Bulawayo, Rhodesia (modern Zimbabwe). Anderson and the mission survived the Second Matabele War and a 1899–1901 malaria outbreak. In 1903 he established the Rusangu Mission in the north of Rhodesia (modern Zambia), which now hosts schools and a university. Anderson later worked in the Bechuanaland Protectorate and Angola. From 1935 to his retirement in 1945 he was employed by the Seventh-day Adventist Church's Africa Division with responsibilities stretching from Cape Town to Lake Chad.