Clifford is both a given name and a surname of Old English origin that applies to a number of individuals or places. It simply means "ford by a cliff".
Clifford Allen Bradley, Jr. (born 1951), American lawyer and politician
Clifford Andrews (1912–1973), English athlete in cricket
Clifford Antone (1949–2006), American musical producer and club owner
Clifford Warren Ashley (1881–1947), American artist, author
Clifford Berry (1918–1963), American inventor
Clifford Bax (1886–1962), English author and playwright
Clifford Edmund Bosworth (born 1928), English professor, historian
Cliff Bricker (1904–1980), Canadian long-distance runner
Clifford Brown (1930–1956), American musician (jazz trumpeter)
Cliff Burton (1962–1986), American musician (bass guitarist, Metallica)
Clifford Campbell (1892–1991), Jamaican political figure
Clifford Carlson (1894–1964), American athlete in basketball
Clifford Carter (fl. 1980s-present), American musician
Clifford P. Case (1904–1982), American attorney and political figure
Clifford Chapin (born 1988), American voice actor working with Funimation
Cliff Clavin, fictional character on the television series Cheers
Cliff Couser (Clifford Couser, born 1971), an American athlete in boxing
Clifford Ann Creed (born 1938), American female athlete in golf
Clifford Curry (born c. 1940), American musician
Clifford Curzon (1907–1982), English musician (piano)
Clifford David (born 1938), American actor
Clifford Davies (1948–2008), English musician (rock drummer)
Clifford Davis (politician) (1897–1970), American political figure
Clifford Davis (music manager) (fl. 1960s-1980s), American musician and manager of musical groups
Clifford Dupont (1905–1978), English-born political figure in Rhodesia
Clifford Durr (1899–1975), American attorney and civil rights activist
C. M. Eddy, Jr. (1896–1967), American author
Clifford Evans (disambiguation), multiple people
Clifford Forsythe (1929–2000), Northern Ireland political figure
Clifford Brodie Frith (born 1949), English-born Australian ornithologist
Clifford Geertz (1926–2006), American anthropologist
Clifford Goodman (1866–1911), Barbados athlete in cricket
Clifford Goldstein (born 1955), American author, Seventh-day Adventist editor
Chris Graham (boxer) (Clifford Graham, 1900-?)), Canadian athlete in boxing
Clifford Grey (1887–1941), British songwriter, actor (AKA Clifford Gray)
Clifford Hammonds (born 1985), American basketball player
Clifford Hansen (1912–2009), American politician
Clifford Harper (born 1949), English illustrator, anarchist
T.I. (Clifford Joseph Harris Jr., born 1980), American musician and producer
Clifford C. Hastings (1882–1946), New York politician
Clifford Heatherley (1888–1937), English film actor
Clifford Husbands (born 1926), Barbados political figure
Clifford Irving (born 1930), American author
Clifford Irving (politician) (1914–2004), British political figure (Isle of Man)
Clifford Jarvis (1941–1997), American musician (rock drummer)
Clifford Jordan (1931–1993), American musician (jazz saxophone)
Cliff Kincaid (born 1954), American investigative journalist
C. H. B. Kitchin (Clifford Henry Benn Kitchin, October 1895-1967), British author
Clifford J. Keating (born 1979), New Zealand, Engineer
Clifford J. Laube (1891–1974), American Catholic poet, editor and publisher
Clifford Leo Deslatte, Sr. (born 1946), American mayor
Clifford Lincoln (born 1928), Canadian political figure
Carwood Lipton (Clifford Carwood Lipton, 1920-2001), British military figure
Clifford Longley, English journalist and author.
Clifford Sibusiso Mamba (born 1963), Swazi diplomat and former Olympic athlete
Clifford J. MacGregor (1904–1985), American meteorologist, Arctic explorer and naval aviator
Clifford May (born 1951), American author, political activist
Cliff McWatt (Clifford McWatt, 1922-1997), West Indian athlete in cricket
Clifford Meth (born 1961), American author
Clifford Mulenga (born 1987), Zambian athlete in football
Clifford Nass (born c. 1958), American professor (Communications), author
Clifford Odets (1906–1963), American playwright, screenwriter, social activist
Clifford A. Pickover (born c. 1958), American mathematician, author
Cliff Pilkey (Clifford Pilkey, born 1928), Canadian politician and trade union leader
Fido Purpur (Clifford Joseph Purpur, 1912-2001), American athlete in hockey
Clifford Ray (born 1949), American athlete in basketball
Cliff Robinson (basketball, born 1960) (Clifford T. Robinson, born 1960), American athlete in basketball
Clifford Robinson (born 1966), American athlete in basketball
Clifford Rose (born 1929), British actor
Ronnie Shows (Clifford Ronald "Ronnie" Shows, born 1947), American political figure
Clifford Shull (1915–2001), American physicist (Nobel Prize)
Clifford Sifton (1861–1929), Canadian political figure
Clifford D. Simak (1904–1988), American author (science fiction)
Method Man, (pseudonym of Clifford Smith, born 1971), American rap singer
Cliff Spink (Clifford Spink, fl. 1980s-present), British military officer (Royal Air Force)
Clifford Stein (born c. 1965), American computer scientist
Clifford Stoll (born c. 1956), American astronomer, computer expert, author
Clifford Taubes (born 1954), American mathematician
Clifford Thornton (1939–1989), American musician (jazz trumpet, trombone)
Johnny Rebel (singer) (pseudonym of Cajun country musician Clifford Joseph Trahan, born 1938), American musician
Clifford Truesdell (1919–2000), American mathematician, historian
Clifford Walker (cricketer) (1919–1992), British athlete in cricket
Clifford B. Wilson (1879–1943), American political figure
Clifford A. Wolff (born 1970), American attorney
The Clifford family, an English noble family
The Clifford family (bankers), a family of English bankers active in the Netherlands
Alesha Clifford (born 1991), Australian female athlete in football (soccer)
Alfred H. Clifford (1908–1992), American mathematician
Lady Anne Clifford (1590–1676), Countess of Pembroke
Augustus Clifford (1788–1877), British naval officer and court official
Bede Edmund Hugh Clifford (1890–1969), Governor of Mauritius from 1937 to 1942
Betsy Clifford (born 1953), Canadian female athlete in skiing
Buzz Clifford (born 1941 as Reese Francis Clifford III), American musician and songwriter
Charles Clifford, any of several men with the name
Sir Charles Clifford, 1st Baronet (1813–1893), New Zealand politician
Clark Clifford (1906–1998), American Secretary of Defense
Conor Clifford (born 1991), Irish athlete in football
Dermot Clifford (born 1939), English religious figure
Doug Clifford (born 1945), American musician, member of Creedence Clearwater Revival
Edward Clifford (1844–1907), English artist and author
Eleanor Clifford, Countess of Cumberland (Born Eleanor Brandon, 1519-1547), English noblewoman
Esmond Clifford (1895–1970), British Royal Engineers officer
Francis Clifford (author) (1917–1975), pen name of Arthur Leonard Bell Thompson, author
George Clifford, any of several men with the name
George Clifford (footballer) (1899-?), English athlete in cricket
George Clifford III, who engaged the Swedish naturalist Carl von Linné to write Hortus Cliffortianus
Gerald Francis Clifford (1889–1952), a Wisconsin lawyer, politician and executive of the Green Bay Packers
Gordon Clifford, Australian rugby league footballer
Gordon Clifford (1902–1968), American lyricist
Graeme Clifford (born 1942), Australian film editor
Grahame Clifford (1905–1984), English opera singer
Henry Clifford, 1st Earl of Cumberland (1493–1542), British member of nobility in Skipton
Henry Hugh Clifford (1826–1883), British army officer
Howard J. Clifford (fl. 1930s), American political figure in Michigan
Hugh Clifford (1866–1941), British colonial administrator
Hughie Clifford (1866–1929), Scottish athlete in football
Jack Clifford (born 1993), rugby union player
James Clifford (historian) (fl. 1970s-present), American university professor in California
James Clifford (musician) (1622–1698), English religious figure and musician
John Clifford, any of several men with the name
John Clifford, 9th Baron de Clifford (1435–1461), British military leader
John Clifford (choreographer), former New York City Ballet principal dancer
John Garry Clifford (born 1942), American historian
Johnny Clifford (1934–2007), Irish athlete in hurling
J. R. Clifford (1848–1933), American attorney, civil rights pioneer
Linda Clifford (born 1944), American female musician and singer
Lucy Clifford (1846–1929), British female author
Margaret Clifford, Countess of Cumberland (born Margaret Russell, 1560-1616), English noblewoman
Max Clifford (born 1943), English publicist
Michael Clifford (born 1995), Australian musician
Michael R. Clifford (born 1952), American astronaut
Mike Clifford (born 1943), American singer-songwriter and actor
Nathan Clifford (1803–1881), American statesman, diplomat and jurist
Patrick Clifford (born 1966), American musician
Paul Clifford (cricketer) (born 1976), English athlete in cricket
Richard Clifford (died 1421), British religious figure
Robert Clifford, any of several men with the name
Rosamund Clifford (c. 1150 – 1176), "Fair Rosamund", mistress of Henry II of England
Ross Clifford (born 1951), Australian radio personality, author
Simon Clifford (born 1970), English football coach
Thomas Clifford, 1st Baron Clifford of Chudleigh (1630–1673), British politician and statesman
Thomas Clifford, 14th Baron Clifford of Chudleigh (born 1948), a British baron
Tom Clifford (fl. 1970s-2000s), Canadian political figure
William Clifford any of several men with the name
William Kingdon Clifford (1845–1879), English mathematician and philosopher
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