Longmire is a surname, of Scottish origin.
Notable people with the surname Adele Longmire (1918–2008), American actress Conrad Longmire (1921–2010), American physicist Ellen Longmire, American physicist and mechanical engineer James Longmire (1820–1897), American explorer John Longmire (1902–1986), British music educationalist and composer John Longmire (born 1970), Australian rules footballer Robert Longmire (born 1944), Australian rules footballer Tony Longmire (born 1968), American baseball player
Fictional people Walt Longmire, a fictional character