Namesakes
Biblical Characters:
1 character
John Mark (a.k.a. Marcus) (m) Acts 12:12 
Bishops of Rome and the Popes:
1 pope
Mark (a.k.a. Marcus) 336
Mark the Evangelist (a.k.a. Marcus) c. 30-c. 61
Fictional Characters from Books:
1 character
Marcus Cooley 2007 Thirteen Reasons Why
Fictional Characters from Television:
7 characters
Marcus Taylor 1987 Tour of Duty
Mark Taylor 1991 Home Improvement
Marcus Henderson 1997 Smart Guy
Marcus Dixon 2001 Alias
Marcus Turner 2001 McLeod's Daughters
Marc St. James 2006 Ugly Betty
Marcus Cole 2017 13 Reasons Why
Hall-of-Famers:
1 football
(football) Marcus Allen 2003
Harry Potter Characters:
1 character
Marcus Flint
Most Valuable Players:
1 winner
Marcus Allen 1985 football
Notable Activists and Revolutionaries:
1 political activist
(political activist) Marcus Garvey 1887-1940
Notable Actors and Entertainers:
3 actors, 1 model
Marcus Giamatti 1961-
Marcus Schenkenberg 1968-
Marc Blucas 1972-
Scoot McNairy (a.k.a. Marcus) 1977-
Notable Artists:
1 architect
Vitruvius (a.k.a. Marcus) c. 80-c. 15 BC
Notable Athletes:
3 soccer, 2 tennis, 1 driving, 1 football
(soccer) Marcus Berg 1986-
(soccer) Marcus Olsson 1988-
(tennis) Marcus Daniell 1989-
(driving) Marcus Ericsson 1990-
(tennis) Marcus Willis 1990-
(football) Marcus Mariota 1993-
(soccer) Marcus Rashford 1997-
Notable Businesspeople:
1 businessperson
Marcus Goldman 1821-1904
Notable Military Figures:
4 generals
Marcus Licinius Crassus c. 115-53 BC
Marcus Aemilius Lepidus c. 88-c. 12 BC
Marcus Antonius 83-30 BC
Marcus Vipsanius Agrippa c. 63-12 BC
Notable Philosophers and Thinkers:
1 philosopher
Marcus Aurelius 121-180
Notable Politicians and Statespeople:
6 statespersons
Marcus Licinius Crassus c. 115-53 BC
Cicero (a.k.a. Marcus) 106-43 BC
Cato the Younger (a.k.a. Marcus) 95-46 BC
Marcus Aemilius Lepidus c. 88-c. 12 BC
Marcus Junius Brutus 85-42 BC
Marcus Antonius 83-30 BC
Notable Writers:
2 authors, 2 poets
Marcus Terentius Varro 116-27 BC
Quintilian (a.k.a. Marcus) 35-100
Lucan (a.k.a. Marcus) 39-65
Martial (a.k.a. Marcus) 40-102
Olympic Medalists:
3 bronze, 3 gold, 2 silver, 1 gold/silver
(bronze) Marcus Vinícius Dias 1948 basketball
(gold) Marc Freiberger 1952 basketball
(bronze) Marcus Mattioli 1980 swimming - 4x200 m freestyle relay
(gold) Marcus Jensen 2000 baseball
(gold) Anthony Sanders (a.k.a. Marcus) 2000 baseball
(gold/silver) Marcus Hellner 2010; 2014 cross-country skiing
(silver) Marcus Krüger 2014 ice hockey
(silver) Marcus Johansson 2014 ice hockey
(bronze) Marcus Ellis 2016 badminton doubles
Roman and Byzantine Emperors:
25 emperors
Emperor Marcus Salvius Otho 69
Emperor Marcus Cocceius Nerva 96-98
Emperor Marcus Ulpius Nerva Trajanus 98-117
Emperor Marcus Marcus Aurelius Antoninus 161-180
Emperor Lucius Aurelius Commodus Antoninus (a.k.a. Marcus) 177-192
Emperor Marcus Didius Severus Julianus 193
Emperor Marcus Opellius Macrinus 217-218
Emperor Marcus Aurelius Severus Alexander 222-235
Emperor Marcus Antonius Gordianus Sempronianus Romanus Africanus 238
Emperor Marcus Antonius Gordianus Sempronianus Romanus Africanus 238
Emperor Marcus Clodius Pupienus Maximus 238
Emperor Marcus Antonius Gordianus Pius 238-244
Emperor Marcus Julius Philippus 244-249
Emperor Marcus Aemilius Aemilianus 253
Emperor Marcus Aurelius Claudius 268-270
Emperor Marcus Aurelius Claudius Quintillus 270
Emperor Marcus Claudius Tacitus 275-276
Emperor Marcus Annius Florianus 276
Emperor Marcus Aurelius Probus 276-282
Emperor Marcus Aurelius Carus 282-283
Emperor Marcus Aurelius Numerius Numerianus 283-284
Emperor Marcus Aurelius Carinus 283-285
Emperor Marcus Aurelius Valerius Maximianus 286-305
Emperor Marcus Flavius Valerius Constantius 305-306
Emperor Marcus Aurelius Valerius Maxentius 306-312
Saints:
3 saints
Saint Mark the Evangelist (a.k.a. Marcus) c. 5-68
Saint Marcus ?-286
Saint Mark (a.k.a. Marcus) ?-336
Shakespearian Characters:
9 characters
Marcus Andronicus Titus Andronicus
Cicero (a.k.a. Marcus) Julius Caesar
Lepidus (a.k.a. Marcus) Antony and Cleopatra; Julius Caesar
Brutus (a.k.a. Marcus) Julius Caesar
Mark Antony (a.k.a. Marcus) Antony and Cleopatra; Julius Caesar
Young Cato (a.k.a. Marcus) Julius Caesar
Messala (a.k.a. Marcus) Julius Caesar
Agrippa (a.k.a. Marcus) Antony and Cleopatra
Scarus (a.k.a. Marcus) Antony and Cleopatra