Aiginio, known before 1926 as Libanovo, is a town and a former municipality in Pieria regional unit, Greece. Since the 2011 local government reform it is part of the municipality Pydna-Kolindros, of which it is the seat and a municipal unit. The municipal unit has an area of 75.541 km2, the community 62.246 km2. The population of the municipal unit was 4,369 people and the population of the community was 3,860 people as of 2021.