The aim of the presented paper is to analyze international migrations both from and to the area of ex-Yugoslavia in 1991-2006 and to identify their possible influence on international relations, mainly among the successor states of the Socialist Federal Republic of Yugoslavia (SFRY), Central European countries with large communities of population of South Slav and Kosovo origin (Austria, Germany, Switzerland) and the Czech Republic. The paper consists of three main parts. The first part is, besides a brief characteristics of political development and circumstances leading to the break-up of SFRY, giving a detailed statistic of all the significant migration waves in each individual republic of the former federation, stating the main reasons and impacts of the migrations mentioned, as well as critically appraising all the available facts on the extent of given migration waves. The second part deals with the problems of constitution, structure and numeral development of the South Slav and Kosovo communities in the Czech Republic and other selected Central European countries. In the closing part we work towards to find a factual and time context in the changes of migration and integration policy of target countries, in reaction to the humanitarian crisis in Yugoslavia of the given period.