Lucas as a surname may refer to:
A. P. Lucas (1857–1923), English cricketer
Al Lucas (American football) (1978–2005), professional American football player (NFL, AFL)
Albert Lucas (athlete) (1899–1967), French hurdler
Al Lucas (basketball) (1922–1995), professional basketball player who played one season for the Boston Celtics
Al Lucas (musician) (1916–1983), Canadian jazz bassist and studio musician
Albert Lucas (Jewish activist) (1859–1923), British-born American activist in global charity and Orthodox Judaism
Albert Lucas (juggler) (born 1960), American juggler who has set several world records
Anthony Francis Lucas (1855–1921), Croatian-born oil-field engineer
Antoinette Lucas (born 1968), American field hockey player
Arthur Lucas, one of the last two people to be executed in Canada
Arthur Lucas (academic), 18th Principal of King's College London
Arthur Henry Shakespeare Lucas (1853-1936), English-born Australian schoolmaster and scientist
Baron Lucas, aristocratic family name - see below
Benjamin Lucas, Anglo-Irish soldier of the 17th century
Buddy Lucas (swimmer), New Zealand swimmer
Buddy Lucas (musician), US musician
Caroline Lucas (born 1960), British politician
Charles Lucas (1613–1648), English soldier
Charles Lucas (musician) (1808–1869), British cellist
Charles Lucas (politician) (1713–1771), Irish politician and physician
Charles Lucas (architect) (1838–1905), French architect
Charles Davis Lucas (1834–1914), Anglo-Irish soldier, Victoria Cross recipient
Charlotte Lucas (born 1976), British actress
Clarence Lucas (1866–1947), Canadian composer
Colin Lucas (born 1940), British historian
Craig Lucas (born 1951), American playwright
David Lucas (born 1937), American music producer and jingle writer
David Lucas, pseudonym of Steven Blum (born 1965), American voice actor
Dick Lucas (minister) (born 1925), British evangelical speaker
Dick Lucas (singer), British vocalist
E. V. Lucas (1868–1938), British writer
Édouard Lucas (1842–1891), French mathematician who studied Lucas numbers and the closely related Fibonacci numbers (both of which are examples of a Lucas sequence)
Edward Lucas, one of several people including:
Edward Lucas (journalist), British journalist
Eliza Lucas (c.1722–1793), Antiguan-born plantation manager
Francis Lucas, various including:
Francis Lucas (c.1741–1770), naval officer and merchant trader born in Clontibret, Ireland
Francis Lucas (Irish politician) (1669–1746), Member of Parliament for Monaghan Borough 1713–1746 and Monaghan County
Francis Lucas (English politician) (1850–1918), British company director and Conservative Member of Parliament for Lowestoft 1900–1906
Frank E. Lucas (1876–1948), American politician
Frank Lucas (1894–1967), English literary critic
Frank Lucas (drug lord) (born 1930), American drug dealer
Frank Lucas (Oklahoma politician) (born 1960), American politician
Frederick Lucas (1812-1855), British journalist
Frederick Ross Lucas (Buddy Lucas, 1931–2002), New Zealand swimmer
Fred Lucas (Frederick Warrington Lucas, 1903–1987), American Major League Baseball player
Sir Frederick Cook, 2nd Baronet (Frederick Lucas Cook, 1844–1920), British politician
Frederic Augustus Lucas (1852–1929), American anatomist and museum director
Gary Lucas, American musician
Gary Lucas (baseball player) (born 1954), American baseball player
Geoffry Lucas (1872–1947), English architect (often mis-spelt Geoffrey)
George Lucas (born 1944), American film maker
George W. Lucas (1845–1921), American soldier, Medal of Honor recipient
Henry Lucas (politician) (c.1610-1663), British politician and benefactor
Henry Lee Lucas (1936–2001), American convicted murderer
Hippolyte Lucas (1814-1899), French entomologist
Hippolyte-Julien-Joseph Lucas (1807-1878), French writer and critic
Ian Lucas (born 1960), British politician
Isaac Benson Lucas (1867–1940), Canadian politician
Isabel Lucas (born 1985), Australian actress
Isabelle Lucas (1927–1997), British actress and singer
James Lucas (1792-1865), see Lucas Brothers, Builders, British builder
Jean Jacques Étienne Lucas (1764–1819), French naval officer
Jean Lucas (1917–2003), French racing driver
Jeanne Hopkins Lucas (c.1936–2007), American politician
Jerry Lucas (born 1940), American basketball player
Jett Lucas (born 1993), American actor, son of George Lucas
Jim G. Lucas (1914–1970), American journalist
John Lucas, one of several people including:
John Lucas (comics), American comic book artist
John Lucas (philosopher)
Sir John Lucas (1606-1671) 1st Lord Lucas of Shenfield, brother of Charles Lucas
John Lucas (VC) (1827-1892), Irish soldier, recipient of the Victoria Cross after action in New Zealand
John Lucas II, American basketball player, NBA
John Lucas III, American basketball player, son of John Lucas II
John Meredyth Lucas, screenwriter, director
John P. Lucas, American general in World War II
John Seymour Lucas, British artist
Joseph Lucas (1834-1902), founder of the British automotive electrical components manufacturer - Lucas Automotive, LucasVarity
Josh Lucas, American actor
Ken Lucas, American politician
Malcolm M. Lucas, American judge
Martha Lucas Pate Administrator of colleges,organizations dedicated to international affairs, education, humanitarian aid, and religion
Matt Lucas (born 1974), British comedian
Maurice Lucas, American basketball player
Michael Lucas, one of several people including:
Michael Lucas (director)
Michael Lucas (political activist), artist, designer and political activist
Michael William George Lucas (1926-2001), British politician, 2nd Lord Lucas of Chilworth
Nathaniel Lucas, convict transported to Australia
Netley Lucas (c. 1903 - 1940), English confidence trickster
Nick Lucas, American jazz troubadour
"Peter Lucas (footballer) (born 1929), Australian rules footballer
Ray Lucas, American football player
Reggie Lucas, American songwriter and producer
Richard Lucas, one of several people including:
Richard Lucas (clergyman) (c. 1640–1715), Welsh clergyman
Richard Lucas (politician)
Richard Lucas (rower) (1886–1968), British rower
Richie Lucas (born 1938), American footballer
Richard Cockle Lucas (1800–1883), English sculptor
Robert Lucas, one of several people including:
Robert Lucas (governor), American politician
Robert Lucas, Jr., American economist (Lucas critique)
Sam Lucas, American actor
Samuel Lucas, abolitionist and newspaper editor
Samuel Lucas (1805-1870), 'Senior" - brewer and painter
Sarah Lucas, British artist
Scott Lucas, one of several people including:
Scott W. Lucas (1892–1968), U.S. Senator and Senate Majority Leader from Illinois
Scott Lucas (footballer) (born 1977), Australian footballer
Scott Lucas (musician), founding member of Local H
Shannon Lucas, American extreme metal drummer
Spencer G. Lucas, American paleontologist
St. John Lucas (1879–1934), English poet and anthologist
Steve Lucas, commander of Canadian Forces Air Command
Thomas Lucas (royalist) (d. 1649), English Cavalier, brother of and John and Charles
Thomas Lucas (c. 1720-1784), English MP and West Indies merchant
Thomas Geoffry Lucas (1872–1947), English architect
Thomas Pennington Lucas (1843-1917), Scottish-born Australian medical practitioner
Tommy Lucas (1895-1953), English footballer
Trevor Lucas, Australian folk-rock musician
Victor Lucas, Canadian writer and TV show director
Vrain Denis-Lucas, French forger
Werner Lucas, German pilot
Wilfred Lucas, Canadian film actor and director
Lucas as an aristocratic family name, Baron Lucas of Crudwell, may refer to:
Mary Grey, Countess of Kent, 1st Baroness Lucas of Crudwell (died 1702)
Henry Grey, 1st Duke of Kent, 2nd Baron Lucas of Crudwell (1671–1740)
Anthony Grey, Earl of Harold, 3rd Baron Lucas of Crudwell (1695–1723)
Jemima Yorke, 2nd Marchioness Grey, 4th Baroness Lucas of Crudwell (1722–1797)
Thomas de Grey, 2nd Earl de Grey, 6th Baron Lucas of Crudwell (1781–1859)
Anne Florence Cowper, 7th Baroness Lucas of Crudwell (1806–1880)
Francis Cowper, 7th Earl Cowper, 8th Baron Lucas of Crudwell (1834–1905)
Auberon Herbert, 9th Baron Lucas of Crudwell (1876–1916)
Nan Ino Cooper, 10th Baron Lucas of Crudwell (1880–1958)
Anne Rosemary Palmer, 11th baroness of Crudwell (1919–1991)
Ralph Palmer, 12th Baron Lucas of Crudwell (born 1951)