Octavian's military campaigns in Illyricum

Octavian's military campaigns in Illyricum
	Part of Wars of Octavian
	; The area covered by the military campaigns of Octavian
Date	From 35 B.C. to 33 B.C.
Location	Illyria
Result	Roman victory
Belligerents
Romans; Allies:; Taurisci, Norici	Iapodes (Moentini, Avendeatae, Arupini); Pannonians (Segestans); Dalmatae; Daesitiates
Commanders and leaders
Octavian (WIA); Vipsanius Agrippa; Fufius Geminus; Statilius Taurus; Messalla Corvinus; Marcus Helvius; Menodorus (Menas)	Verzo ; Testimus
Units involved
3 legions; A fleet	3.000 Iapodes (35 BC.);; 12.000 Dalmatae (34 BC.);

Octavian's military campaigns in Illyricum (35–33 BC) constitute the first attempt by the future emperor Augustus, then known as Octavian, to occupy the northern Illyrian region (roughly modern Croatia). This conflict came shortly after achieving a definitive victory over Sextus Pompey in Roman Sicily and before the decisive clash with his fellow triumvir, Mark Antony, in Roman Greece and Ptolemaic Egypt. Octavian was wounded in battle during the first conflict. However, the triumph for his victories was delayed and celebrated only after the defeat of Mark Antony and Cleopatra.

In the course of the Illyrian War, Octavian conquered (in addition to some less serious foes) the Iapodes and Delmatae tribes, and parts of Pannonia around Segestica/Siscia. However, the majority of the future provinces of Pannonia and Dalmatia were subdued by Tiberius during his Pannonian War (12–9 BC) and Pannonian-Dalmatian Rebellion (AD 6–9). These conflicts were initiated by preparations for war against Maroboduus, particularly through the recruitment of soldiers in Illyricum.