|Administrative region||North Aegean|
|• Municipal unit||122.5 km2 (47.3 sq mi)|
|• Municipal unit||5,602|
|• Municipal unit density||46/km2 (120/sq mi)|
|• Population||3,276 (2011)|
|Time zone||UTC+2 (EET)|
|• Summer (DST)||UTC+3 (EEST)|
Plomari (Greek: Πλωμάρι) is a town and a former municipality on the island of Lesbos, North Aegean, Greece. Since the 2019 local government reform it is part of the municipality Mytilene, of which it is a municipal unit. It is the only sizable coastal settlement in the south, and the second largest town on Lesbos. The municipal unit of Plomari is the southernmost on Lesbos island and has a land area of 122.452 km2 and a 2011 census population of 5,602. Its largest towns or villages are Plomári, the former municipal seat (pop. 2,996), Plagiá (529), Palaiochóri (314), Megalochóri (325), and Akrási (214).
Plomari is located due south of Mount Olympos. It offers scenic appeal as well as the presence of its famous ouzo-distilling industry. Brands can be sampled at the traditional kafenia. The local festival (or "panigiri") season kicks off in mid-July with an ouzo festival, and culminates towards the end month in celebrations honouring Agios Haralambos and including such rural activities as horse race. The seaside summer resort of Agios Isidoros lies on the east, two kilometers far from Plomari, while the seaside neighbourhood Ammoudeli, with the church of Agios Panteleimonas, is located on the west. Agios Isidoros has been voted as the seventh best beach of Greece, in a voting that took place through the internet for the program of clean coasts. West of Plomari 6 km away you can reach Melinda, a 700-metre sand-and-shingle beach at the mouth of a canyon choked with olive trees.
The province of Plomari (Greek: Επαρχία Πλωμαρίου) was one of the provinces of the Lesbos Prefecture. Its territory corresponded with that of the current municipal unit Plomari and the village Stavros. It was abolished in 2006.
There is a sports club based in Plomari called Egeas Plomariou (Greek: Αιγέας Πλωμαρίου) best known for its football team that currently plays in one of local football championships of Greece, lowest leagues of Greek football, and was founded in 1949. It has a basketball team too.