Poniente Almeriense is a comarca in Almería, Spain. It is sometimes also known as the "sea of plastic" (Mar de plástico) due to the numerous greenhouses that cover the area. The comarca contains ten municipalities (the tenth, Balanegra, was created in 2015 from part of Berja municipality) and 259,357 inhabitants^[2] in an area of 971 km². The "sea of plastic" was one of the subjects of We feed the world, a 2005 documentary; and the setting of Spanish crime drama Mar de plástico.

The typical agricultural products of the greenhouses are: cucumbers, watermelons, eggplants, zucchinis, peaches, peppers and tomatoes.^[3]

The comarca borders the Alboran Sea to the South, the city of Almería to the east, the Sierra de Gádor to the north, and the municipality of Albuñol (in Granada province) to the west.

The Poniente Almeriense contains the following ten municipalities:

Note: + an additional municipality, Balanegra, was created in 2015 from part of Berja municipality.