Since 2005 ICRANet co-organizes an International Ph.D. program in Relativistic Astrophysics — International Relativistic Astrophysics Ph.D. Program, IRAP-PhD, the first joint PhD astrophysics program with: ASI - Italian Space Agency (Italy); Bremen University (Germany); Carl von Ossietzky University of Oldenburg (Germany); CAPES - Brazilian Federal Agency for Support and Evaluation of Graduate Education (Brazil); CBPF - Brazilian Centre for Physics Research (Brazil); CNR - National Research Council (Italy); FAPERJ -Foundation "Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro" (Brazil); ICRA - International Center for Relativistic Astrophysics (Italy); ICTP - Abdus Salam International Centre for Theoretical Physics (Italy); IHES - Institut Hautes Etudes Scientifiques (France); Indian centre for space physics (India); INFN - National Institute for Nuclear Physics (Italy); NAS RA - Armenian National Academy of Sciences (Armenia); Nice University Sophia Antipolis (France); Observatory of the Côte d'Azur (France); Rome University - “Sapienza” (Italy); Savoy University (France); TWAS - Academy of sciences for the developing world; UAM - Metropolitan Autonomous University (Mexico); UNIFE - University of Ferrara (Italy). Among the associated centers, there are both institutes devoted to theory and others devoted to experiments and observations. In that way, PhD students can have a wider education on theoretical relativistic astrophysics and put it in practice. The official language of the IRAP PhD is English and students have also the opportunity to learn the national language of their hosting country, attending several academic courses in the partner Universities.