Birch is a surname. Notable people with the surname include:
A. A. Birch, Jr.
Adam Birch
Andreas Birch
Arthur John Birch (1915–1995), Australian chemist
Arthur Nonus Birch, Lieutenant-Governor of Ceylon
Bill Birch (born 1934), New Zealand politician
Bob Birch
Bryan Birch, British mathematician
Charles Birch, in full Louis Charles Birch (1918–2009), Australian geneticist, theologian and author
Charles Bell Birch (1832–1893), English sculptor
Charlotte Birch-Pfeiffer
Christian Birch-Reichenwald
Prof De Burgh Birch FRSE (1852-1937), English physiologist and author
Diane Birch, musician
Edmund Birch
Elizabeth Birch
Eugenius Birch
Francis Birch (cryptographer) (1889–1956), British cryptographer and actor
Francis Birch (geophysicist) (1903–1992), American geophysicist
Gary Birch footballer
Gina Birch
Glynn Birch
James W.W. Birch
Jeff Birch (born 1927), English professional footballer
John Birch (disambiguation)
Lamorna Birch
Margaret Birch
Martin Birch
Patricia Birch
Paul Birch (disambiguation), various
Penny Birch, pseudonym
Percy Birch, English footballer
Peter Birch-Reichenwald
Raymond Birch
Ric Birch
Robert H. Birch, American western outlaw
Rosalie Birch
Ryan Birch (1969–2013), British judoka
Samuel Birch
Simon Birch
Stanley F. Birch Jr.
Thomas Birch
Thora Birch
Wallace Birch, footballer
Walter de Gray Birch (1842-1924), historian
William Birch (footballer), footballer
Fictional characters:
Edna Birch
Eve Birch
Peter Birch (Emmerdale)
Professor Birch, a character from the Pokémon series