Walter Thomas Clifford Earp (1879–1921) was a British pioneer racing motorist. He was born in 1879, in Lambeth, Surrey, England. His parents were Arthur Clifford Earp (1855–1886), a sculptor, and Emily Wood. He attended Ardingly College, Sussex. His surname was often spelled Clifford-Earp. He had a brother, also Arthur Clifford Earp, born 1 January 1883, who was also a racing motorist, and on occasion acted as his riding mechanic. He was a protégé of S. F. Edge and sometimes faced adversity, being considered a 'trade' professional in an age of amateurs.