Earthling

Earthling was the name given to an inhabitant of the planet Earth.

The Sontaran Marshal, believing the Fourth Doctor to be a human from Earth, addressed the Doctor as "Earthling". (TV: The Sontaran Experiment)

The Fifth Doctor, while explaining to Monarch that not all of his party were from Earth, described his human companion Tegan Jovanka as an Earthling. The Doctor later referred to Bigon, Lin Futu, and Kurkutji as Earthlings. (TV: Four to Doomsday)

Shortly before the Toclafane invasion of Earth and the start of the Year That Never Was, broadcast a message to the humans of Earth, saying, "So, Earthlings, basically, end of the world. Here come the drums!" (TV: The Sound of Drums)