Muir is a surname. Notable people with the surname include:
A–J
edit- Adam Muir (born 1971), Australian rugby league footballer
- Alex Muir (1923–1995), Scottish footballer
- Alex Muir (Albion Rovers footballer), Scottish footballer
- Alexander Muir (1830–1906), songwriter, poet and school headmaster
- Andrew Muir (chess player) (born 1958), Scottish chess player
- Andrew Muir (politician) (born 1976), Northern Irish politician
- Barry Muir (1937–2022), Australian rugby league footballer
- Bill Muir (born 1942), American football coach
- Bryan Muir (born 1973), Canadian National Hockey League player
- Charles Henry Muir (1860–1933), U.S. Army officer
- Chris Muir (cartoonist) (born 1958), U.S. cartoonist (webcomic Day by Day)
- David Muir (born 1973), anchor of ABC World News Tonight
- Debbie Muir (born 1953), Canadian former synchronized swimmer and coach
- Edwin Muir (1887–1959), British poet, novelist and translator, husband of Willa Muir
- Florabel Muir (1889–1970), American journalist, writer, and newspaper columnist
- Francis Muir (born 1926), British geophysicist
- Frank Muir (1920–1998), British comedian
- Frederick Muir (1849–1921), Australian cricketer
- Frederick Arthur Godfrey Muir (1873–1931), British entomologist
- Gary Muir (born 1985), Scottish footballer
- Harry Muir (fl.1960s–1980s), owner of Beck Book Company, forerunner of Wakefield Press in Adelaide, South Australia
- Hope Muir (born 1970/1971), Canadian dancer, rehearsal director and teacher
- Ian Muir (Scottish footballer) (1929–2009), Scottish footballer (Motherwell)
- Ian Muir (English footballer) (born 1963), English footballer (Tranmere Rovers)
- Jamie Muir (politician) (born 1941), Canadian educator and politician
- Jamie Muir (born 1942), Scottish painter and former percussionist
- Jean Muir (actress) (1911–1996), American actress
- Jean Muir (1928–1995), British fashion designer
- Jo Muir (born 1994), British modern pentathlete
- John Kenneth Muir (born 1969), U.S. writer on film and television
- John Muir (1838–1914), naturalist, engineer, explorer, and writer
- John Muir (disambiguation), several people
- John Muir (South African naturalist) (1874–1947), South African naturalist and cultural historian
- John Muir (indologist) (1810–1882), Scottish sanskritist
K–Z
edit- Kado Muir, Aboriginal Australian artist and land rights advocate
- Karen Muir (1952–2013), South African swimmer
- Kenneth Muir (disambiguation), several people
- Kenneth Muir (scholar) (1907–1996), literary scholar and author
- Kenneth Muir (VC) (1912–1950), British soldier
- Kirsty Muir (born 2004), Scottish freestyle skier
- Laura Muir (born 1993), Scottish athlete
- Leilani Muir (1944–2016), Canadian plaintiff
- Lewis F. Muir (1883–1915), American composer
- Lindsay Muir (born 1956), Scottish footballer
- Lois Muir (born 1935), New Zealand sportswoman
- M. M. Pattison Muir (1848–1931), chemist and author
- Malcolm Muir (publisher) (1885–1979), U.S. magazine industrialist
- Malcolm Muir (judge) (1914–2011), American judge
- Marjorie Muir Worthington (1900–1976), American writer
- Mike Muir (born 1964), U.S. singer
- Nat Muir (born 1958), Scottish athlete
- Norrie Muir (1948–2019), British mountaineer
- Richard David Muir (1857–1924), British prosecutor
- Robert Muir (disambiguation), several people
- Robbie Muir (footballer) (born 1953), Australian rules footballer
- Ruby Muir (born 1991), cross-country runner from New Zealand
- Tamsyn Muir (born 1985), novelist from New Zealand
- Thomas Muir (disambiguation), several people
- Thomas Muir (mathematician) (1844–1934), British mathematician
- Thomas Muir of Huntershill (1765–1799), Scottish political reformer
- Walter Muir (soccer) (born 1953), Scottish footballer
- Ward Muir (1878–1927), English photographer
- Willa Muir (1890–1970), Scottish novelist, essayist and translator, wife of Edwin Muir
- William Muir (1819–1905), British orientalist, founder of Muir College
- William Muir (coach) (1895–1967), college sports coach
Fictional characters
edit- Lucy Muir, a character in the 1947 film The Ghost and Mrs. Muir
- Carolyn Muir, a character in the subsequent TV series (1968)