The following outline is provided as an overview of and topical guide to Julius Caesar:

Gaius Julius Caesar (12 or 13 July 100 BC – 15 March 44 BC) was a Roman general, statesman, and author who was the dictator of the Roman Republic almost continuously from 49 BC until his assassination in 44 BC. A member of the First Triumvirate, he led the Roman armies through the Gallic Wars and defeated his political rival Pompey in Caesar's civil war. He consolidated power and proclaimed himself dictator for life in 44 BC, helping create the political conditions that led to the collapse of the Roman Republic and the emergence of the Roman Empire. For his role in these events, he is regarded as one of history’s most influential figures.

• Constitutional reforms of Julius Caesar – Changes made to the Roman constitution during Caesar's dictatorship
• Early life and career of Julius Caesar – Caesar's upbringing and initial political and military experiences
• Poems by Julius Caesar – Literary works attributed to Caesar
• Julian calendar – Calendar reform introduced by Caesar in 45 BC, basis for the modern Gregorian calendar
• Extension of Roman citizenship – Caesar's policy of granting citizenship to non-Romans

Military campaigns of Julius Caesar – Overview of Caesar's major military expeditions

• Siege of Mytilene – Early military action in which Caesar participated
• Gallic Wars – Series of military campaigns in Gaul from 58 to 50 BC
  • Battle of the Arar – Caesar's victory over the Helvetii in 58 BC
  • Battle of Bibracte – Decisive battle against the Helvetii in 58 BC
  • Battle of Vosges – Caesar's defeat of Ariovistus in 58 BC
  • Battle of the Sabis – Major battle against the Nervii in 57 BC
  • Battle of the Axona – Caesar's campaign against the Belgic tribes in 57 BC
  • Invasions of Britain – Caesar's expeditions to Britain in 55 and 54 BC
  • Battle of Gergovia (notable defeat) – Caesar's unsuccessful siege of the Gallic oppidum in 52 BC
  • Battle of Alesia – Decisive battle of the Gallic Wars in 52 BC
  • Siege of Uxellodunum – Final major battle of the Gallic Wars in 51 BC
• Crossing the Rubicon – Caesar's fateful decision to enter Italy with his army in 49 BC, sparking civil war
• Caesar's civil war – Conflict between Caesar and the Roman Senate from 49 to 45 BC
  • Siege of Corfinium – Caesar's first major victory in the civil war
  • Siege of Brundisium – Caesar's pursuit of Pompey in 49 BC
  • Battle of Ilerda – Caesar's victory in Spain in 49 BC
  • Battle of Dyrrhachium – Indecisive battle between Caesar and Pompey
  • Battle of Pharsalus – Decisive victory over Pompey in 48 BC
  • Alexandrian war – Caesar's intervention in Egypt from 48 to 47 BC
    • Siege of Alexandria – Caesar's defense against Ptolemy XIII's forces
    • Battle of the Nile – Caesar's victory over Ptolemy XIII
  • Battle of Zela – Swift victory over Pharnaces II of Pontus
  • Battle of Ruspina – Indecisive battle in Africa in 46 BC
  • Battle of Thapsus – Caesar's victory over Pompeian forces in Africa
  • Battle of Munda – Final battle of the civil war in 45 BC
  • Siege of Corduba – Caesar's capture of the city in 45 BC

• Early life and career of Julius Caesar – Caesar's youth and initial political and military experiences

== Death of Julius Caesar

• Assassination of Julius Caesar – Events leading to and including Caesar's murder on the Ides of March, 44 BC

• Julia (daughter of Julius Caesar) – Caesar's only known biological child from his first marriage
• Gaius Octavius (Augustus) – Caesar's great-nephew and adopted heir, later known as Augustus
• Cleopatra VII – Queen of Egypt and Caesar's lover
• Caesarion – Son of Julius Caesar and Cleopatra VII
• Cornelia (wife of Julius Caesar) – Caesar's first wife
• Pompeia (wife of Julius Caesar) – Caesar's second wife
• Calpurnia (wife of Julius Caesar) – Caesar's third and last wife

• Caesar (title) – Use of Caesar's name as a title for Roman emperors and other rulers
• Kaiser – German title for emperor derived from Caesar
• Tsar – Slavic title for monarch derived from Caesar
• Roman Empire – The imperial system of government that succeeded the Roman Republic
• Julio-Claudian dynasty – First imperial dynasty of Rome, founded by Caesar's adopted heir Augustus
• Cultural depictions of Julius Caesar – Representations of Caesar in art, literature, and popular culture

• Julius Caesar Society – Organization dedicated to the study of Caesar and his era

• Commentarii de Bello Gallico (by Julius Caesar) – Caesar's firsthand account of the Gallic Wars
• Commentarii de Bello Civili (by Julius Caesar) – Caesar's account of the civil war against Pompey
• Life of Caesar (Plutarch) – Biography of Caesar by the Greek historian Plutarch

• Badass – Book featuring Caesar among other historical figures
• Caesar, Life of a Colossus – Biography of Caesar by Adrian Goldsworthy
• Heroes of History – Book featuring Caesar among other historical figures
• Rubicon: The Last Years of the Roman Republic – Book about the fall of the Roman Republic
• Tony Robinson's Romans – Book about Roman history including Caesar's era

• Michael Grant (historian) – British classicist and numismatist who wrote about Caesar
• Adrian Goldsworthy – British historian specializing in ancient Roman history
• Suetonius – Roman historian who wrote about Caesar in "The Twelve Caesars"
• Plutarch – Greek historian and biographer who wrote a famous biography of Caesar

• First Triumvirate – Political alliance between Caesar, Pompey, and Crassus
• Roman Republic – The system of government that preceded the Roman Empire
• Roman Empire – The imperial system that followed the Roman Republic

• C. Iulius (131) C. f. C. n. Fab. Caesar in the Digital Prosopography of the Roman Republic.
•  Works by or about Gaius Julius Caesar at Wikisource
• Works related to Julius Caesar at Wikisource
• Online books, and library resources in your library and in other libraries about Caesar
• Online books, and library resources in your library and in other libraries by Caesar
• Guide to online resources

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