Deer is an English surname. Notable people with the surname include:
A. Brian Deer (1945–2019), American-Canadian librarian Aaron Deer (born 1980), American songwriter and multi-instrumentalist Ada Deer (1935–2023), Native American leader Andrew Deer, English taekwondo athlete Beatrice Deer (born 1982), Canadian singer-songwriter Brian Deer, 20th-21st century British investigative reporter Dennis Deer (1972–2024), American politician Gary Mule Deer (born 1939), American comedian Gene Deer (1964—2024), American blues guitarist George Deer (1890–1974), British politician Jaime Deer, American police officer James Young Deer (1876–1946), Native American film actor Olive Deer (1897–1983), British politician Peter Deer (1878–1956), Canadian track and field athlete Rob Deer (born 1960), American baseball player Sarah Deer (born 1972), American lawyer Tracey Deer (born 1978), Canadian-Mohawk screenwriter
See also Dare (name) Dear (surname) Deere