The Markham River in Papua New Guinea was named after him; Carsten Borchgrevink discovered and named Markham Island in the Ross Sea during his 1900 expedition, a gesture that was not, however, acknowledged by Markham. The name lives on in Lima, Peru, through Markham College, a private co-educational school. Minna Bluff, a promontory extending into the Ross Ice Shelf, was named by Scott for Lady Markham. The plant genus "Markhamia" was named after Markham by the German botanist Berthold Carl Seemann in 1863.