Phil Earl Shafer (November 13, 1891 – January 29, 1971) was an American racing driver and constructor.

Shafer made 30 AAA Championship Car starts from 1923 to 1952. He captured one win in 1924 at the New York State Fairgrounds Raceway in Syracuse, New York. That year he finished a career best 9th in the National Championship. Shafer won the 1933 Elgin Trophy, considered to be the first officially organized stock car race in the United States.^[1][2] His last oval or road course Championship Car start came in 1936 - afterwards the only Championship starts he made were in the Pikes Peak Auto Hillclimb.^[3][4] He later built his own racing chassis.