GREEK AND ROMAN COLONIZATION IN THE PISIDIAN ENVIRONMENT It’s only after the conquest of Alexander that Pisidia was colonized by the Greco-Macedonians. In this region, the Seleucids etablished colonies. What were the reasons for their choices for the places of the sites? If the global reasons affecting the control of their empire are quite well known, can we identify local reasons? These colonial foundations were the prelude to a large urbanization movement which brought to light many pisidian sites most often transformed into cities whose hierarchy was later modified by Roman colonization in the Augustan era. With some examples, we will try to show what were the consequences of these evolutions on the previously existing sites.