Manly is a surname, and may refer to:
Alan Manly (born 1950), Australian author and computer engineer
Alexander Manly (1866–1944), American newspaper owner
Alexandra Manly (born 1996), Australian cyclist
Alice Elfrida Manly (1846 – 1932), English painter
Basil Manly Sr. (1798–1868), American minister
Basil Manly Jr. (1825–1892), American religious leader and educator
Cathy Manly (born 1973), Burkinabé writer
Charles Manly (1795–1871), American lawyer and politician from North Carolina
Charles Macdonald Manly (1855–1924), Canadian painter
Charles H. Manly (1843–1930), American politician from Michigan
Charles M. Manly (1876–1927), American engineer and flight pioneer
Jack Manly (born 2004), English footballer
James Manly (born 1932), Canadian politician
Jennifer Manly, American neuropsychologist
John Matthews Manly (1865–1940), American professor of English literature
Lewis Manly (1903–1970), American athlete and academic economist
Matthias Evans Manly (1801–1881), American judge
Paul Manly (born 1964), Canadian politician, son of James Manley
Ralza M. Manly (1822–1897), American minister and educator
William L. Manly (1820–1903), American western pioneer