Dropull (Albanian definite form: Dropulli; Greek: Δρόπολη or Δερόπολη Dropoli or Deropoli) is a municipality in Gjirokastër County, in southern Albania. The region stretches from south of the city of Gjirokastër to the Greek–Albanian border, along the Drino river. The region's villages are part of the Greek "minority zone" recognized by the Albanian government, in which majorities of ethnic Greeks live.

The municipality Dropull was created in 2015 by the merger of the former municipalities Dropull i Poshtëm, Dropull i Sipërm and Pogon. The seat of the municipality is the village Sofratikë. According to the 2011 census the total population is 3,503; according to the civil registry of that year, which counts all citizens including those who live abroad, it is 23,247. The municipality covers an area of 448.45 km² (173.15 sq mi).

A city called Hadrianopolis was founded in the region by the Roman emperor Hadrian (r. 117–138). The Synecdemus of Hierocles, which contains a list of the administrative divisions and cities of the Byzantine Empire during the time of Theodosius II (r. 402–450), mentions the city of Αδριανούπολις (Adrianoúpolis) and places it in the region of Dropull. With the gradual adoption of Christianity, the city became a diocese sometime before 431; initially under the jurisdiction of the Metropolis of Nicopolis, and later under the Metropolis of Ioannina. The diocese of Adrianoúpolis is mentioned in the sources without interruption, from the 5th century onwards. In a letter of emperor Leo III (r. 717-741) to the metropolitan bishop of Nikopolis, the bishop of Adrianoúpolis (Αδριανουπόλεως) is also mentioned, while in a source at the end of the 12th century the latter is mentioned as bishop of Drinoúpolis (Δρινουπόλεως). The relevant attestations also include the name Adernoboli, as recorded by the Arab traveler Muhammad al-Idrisi at the end of the 12th century. Also, in the Chronicle of the Tocco, written around 1400, the form Δερνόπολιν (Dernópolin) is attested. According to Hammond, the first attestation of the name Drinoúpolis (Δρινούπολις) is from the 8th century, while according to Sakellariou from the 11th century as Dryinoúpolis (Δρυϊνούπολις); however Kyriazis supports that this form was a literary creation. The region is today called in Albanian Dropull or def. form Dropulli, and in Greek Δρόπολη (Drópoli), Δερόπολη (Derópoli) or Dhropolis.

According to Çabej, Drópull has been formed from Drinópolis/Dryinópolis (Δρυϊνόπολις) which contains the name of the local river Drino; Drinópolis > Drópull. According to Kyriazis, the etymology of Çabej is not convincing, because he ignores the former name of Adrianoúpolis. Using the available literary evidence (both ancient and medieval), Kyriazis offered the following evolution; Αδριανούπολη (Adrianoúpoli) > Αdernoboli > Δερνόπολη (Dernópoli) > Δερόπολη/Δρόπολη (Derópoli/Drópoli). The form Dernópoli (Greek: Δερνόπολιν) is preserved in the Chronicle of the Tocco written in c. 1400, while the evolution of -ρν- > -ρ- (in reference to Dernópoli > Derópoli/Drópoli) according to Kyriazis is a common characteristic of the Greek dialects in southern Albania.

Demiraj considers Dropull to derive from Hadriano(u)polis, as the most likely etymology. He provided a number of reasons, which according to him, support the evolution of Hadrianopolis > Dropull within an Albanian-speaking population. He added, that among the two current forms of Albanian Dropull and Greek Dhropolis, the original form is that with the initial /D-/. Furthermore, Albanian uses either the voiced dental occlusive /d/ or the voiced interdental fricative /ð/ (/dh/) (e.g. the name Dhrovjan) and so it wouldn no be difficult to borrow the Greek form Dhropol-is; whereas in Greek, the letter Δ/δ, which was once pronounced as a sound stop /d/, has long been pronounced only as a sound fricative /ð/ (/dh/). Thus, according to him, the Greek speakers of the area transformed the initial /D-/ into /ð-/ (/dh/) and replaced the final syllable -pull with the Greek form -polis, producing the form Dhro-polis.

During the Middle Helladic period (2100-1550 BC), a double tumulus was dug out in Vodhinë, with strong similarities to the grave circles at Mycenae, showing a common ancestral link with the Myceneans of southern Greece. In classical antiquity, the area was inhabited by the Greek tribe of the Chaonians.

From the Roman period there was a settlement named Hadrianopolis (of Epirus) in the region, one of several named after the great Roman emperor Hadrian. The settlement was built on a strategic spot in the valley of the river Drino near the modern village of Sofratikë, 11 kilometers south of Gjirokastër.

The foundations of Hadrianopolis were first discovered in 1984 when upper sections of the amphitheater were noticed by local farmers. Italian and Albanian archaeologists subsequently excavated much of the site, revealing a full amphitheater, Roman baths, and changing rooms. The site of the agora (forum) has been detected using ground radar, and excavation is expected in the period 2018 onwards. In the amphitheater, there are post holes for iron railings on first row seats. Also some "changing rooms" - originally for actors - were converted to holding pens for wild animals. This was a site where Romans fed enemies of the state to wild animals.