Deer is an English surname. Notable people with the surname include: Ada Deer (born 1935), Native American leader Brian Deer (21st century), British investigative reporter Gary Mule Deer (born 1939), American comedian Gene Deer (21st century), American blues guitarist George Deer (1890-1974), British politician James Young Deer (1876-1946), Native American film actor Rob Deer (born 1960), American baseball player See also Dear (surname) Deere