Carl Friedrich Theodor Strehlow (23 December 1871 – 20 October 1922) was an anthropologist, linguist and genealogist who served on two Lutheran missions in remote parts of Australia from May 1892 to October 1922. He was at Killalpaninna Mission (also known as Bethesda) in northern South Australia, from 1892 to 1894, and then Hermannsburg, west of Alice Springs, from 1894 to 1922. Strehlow was assisted by his wife Friederike, who played a central role in reducing the high infant mortality which threatened Aboriginal communities all over Australia after the onset of white settlement.