The 1st Split Partisan Detachment () or the 1st Split Detachment () was a short-lived unit of the Yugoslav Partisans during World War II. It was composed of volunteers from the city of Split and was created in August 1941, just four months after the Axis occupation of Yugoslavia, and the annexation of Split and most of Dalmatia by the Kingdom of Italy. The unit, composed mostly of young men with little or no fighting experience, planned to relocate to the Dinara mountains to join other Partisan units in fighting the Axis powers.