Steel is a surname. Notable people with the surname include:
- A. G. Steel (1858–1914), English cricketer
- Ace Steel (born 1973), ring name of Christopher Guy, American professional wrestler
- Alan Steel (1935–2015), stage name of Sergio Ciani, Italian bodybuilder and actor
- Alex Steel (1886–1954), Scottish footballer
- Amy Steel (born 1960), American actress
- Amy Steel (netball) (born 1989), Australian netballer
- Anthony Steel (disambiguation), various people
- Arthur Steel-Maitland (1876–1935), British politician
- Barbara Steel (1857–1943), Scottish-South African suffragette
- Belle Steel, Irish Presbyterian
- Ben Steel (born 1975), Australian actor
- Bill Steel (born 1939), English broadcaster and actor
- Billy Steel (1923–1982), Scottish footballer
- Bobby Steel (1888–1972), Scottish footballer
- Bruce Steel (born 1966), American tennis player
- Brynjolf Steel (c. 1205 – c. 1270), Norwegian liegeman
- Bryan Steel (born 1969), English cyclist and multiple Olympic medallist
- Cameron Steel (born 1995), English cricketer
- Carly Steel (born 1987), British television presenter and actress
- Catherine Steel (born 1973), British classical scholar
- Charles Steel (1901−1993), British Army officer and civil servant
- Christine Steel, American actress
- Christopher Steel (disambiguation), various people
- Cynthia Dianne Steel, American judge
- Danielle Steel (born 1947), American author known for her romance novels
- Danny Steel (1884–1931), Scottish footballer
- David Steel (disambiguation), various people
- Dawn Steel (1946–1997), one of the first women to run a major Hollywood film studio
- Dick Steel (1930–1991), English professional footballer
- Doctor Steel, stage name of Rion Vernon, American musician heading an alternative band
- Dorothy Steel (disambiguation), various people
- Douglas Steel (1856–1933), English cricketer
- Duncan Steel (born 1955), British/Australian astrophysicist
- Duncan G. Steel (born 1951), American experimental physicist
- Elizabeth Steel c. 1766 – 1795), English convict sent to Australia
- Elliot Steel, British comedian
- Eric Steel, American filmmaker and producer
- Flora Annie Steel (1847–1929), English writer
- Fred Steel (1884–bef. 1945), English footballer
- Freda Steel, Manitoba judge
- Gary Steel (born 1954), Australian rules footballer
- Gemma Steel (born 1985), British runner
- Geoff Steel, British auto racing driver and engineer
- George Steel (disambiguation), various people
- Georgia Steel (born 1998), English television personality
- Harold Steel (1862–1911), English cricketer
- Harry Steel (disambiguation), various people
- Heather Steel (born 1940), British judge
- Hollie Steel (born 1998), English schoolgirl singer
- Ian Steel (1928–2015), Scottish racing cyclist
- J.A. Steel (born 1969), American writer, director, producer, editor, stunt person and actress
- Jack Steel (1898–1941), New Zealand rugby union player
- James Steel (disambiguation), various people
- Jody Steel, American artist
- John Steel (disambiguation), various people
- Jon Steel (born 1980), English rugby player
- Karen Steel, British scientist
- Kenneth Steel (1906–1970), British painter and engraver
- Kevin Steel (born 1991), American swimmer
- Liam Steel (born 1991), New Zealand rugby union player
- Louise Steel (disambiguation), various people
- Mark Steel (born 1960), English socialist columnist, author and comedian
- Max Steel (disambiguation), various people
- Melissa Steel (born 1993), English singer
- Michael Steel (disambiguation), various people
- Michelle Steel (born 1955), American politician
- Nate Steel, American attorney and politician
- Paul Steel (born 1970), New Zealand squash player and coach
- Pippa Steel (1948–1992), British actress
- Ric Steel (born 1952), American singer
- Robert Steel (disambiguation), various people
- Ronald Steel (1931–2023), American writer and historian
- Ronnie Steel (1929–2009), English footballer
- Thomas B. Steel (born 1929), American computer scientist
- Tommy Steel, Scottish-American soccer player
- Trevor Steel (born 1958), English singer-songwriter
- Sam Steel (born 1998) Canadian ice hockey player
- Samuel Strang Steel (1882–1961), British politician
- Scudamore Winde Steel (1789–1865), British army officer of the East India Company
- Shawn Steel (born c. 1946), American politician and husband of Michelle Steel
- Simon Steel (born 1969), English cricketer
- William Steel (disambiguation), various people