List of ecoregions in Italy

Terrestrial
Italy is in the Palearctic realm Ecoregions are listed by biome.

Temperate coniferous forests
 * Alps conifer and mixed forests

Temperate broadleaf and mixed forests
 * Po Basin mixed forests
 * Apennine deciduous montane forests
 * Dinaric Mountains mixed forests

Mediterranean forests, woodlands, and shrub
 * Italian sclerophyllous and semi-deciduous forests
 * South Apennine mixed montane forests
 * Tyrrhenian-Adriatic sclerophyllous and mixed forests
 * Northeastern Spain and Southern France Mediterranean forests
 * Illyrian deciduous forests

Freshwater

 * Gulf of Venice Drainages
 * Italian Peninsula & Islands

Marine
Italy's territorial waters are in the Temperate Northern Atlantic marine realm, and Mediterranean Sea marine province.
 * Adriatic Sea
 * Ionian Sea
 * Western Mediterranean