1. iberian peninsula.

2. Italian peninsula.

3. Greece peninsula.

4. balkan peninsula;

Iberian peninsula

Italian peninsula

Greece peninsula

The Italian Peninsula

The Iberian Peninsula is much larger than the Italian Peninsula.

The Iberian Peninsula is about 590,000 km2 in area, while the Italian Peninsula is only about 300,000 km2 in area.

The Italian peninsula is a peninsula. It is not a country but a georgraphical feature. Therefore there is no 'official' name. The same applies to the continent of 'South America' and 'North America'. This isn't official merely geographic and in many languages both of these regions are considered to be 1 continent and not 2.