Faculty of Mathematics and Natural Sciences of South-West University "Neofit Rilski" has international relations and contracts with following universities:

• Univerzita Karlova v Praze (Charles University in Prague), Czech Republic
• Univerzita v Ljubljani (University of Ljubljana), Slovenia
• Universite de Rennes, France
• Universität Potsdam, Germany,
• West Pomeranian University of Technology, Szczecin, Poland
• Cardinal Stefan Wyszynski University, Warsaw, Poland
• Universidade Nova de Lisboa, Portugal
• Afyon Kocatepe University, Afyonkarahisar, Turkey
• Transilvania University of Brasov, Brasov, Romania
• Babes-Bolyai University, Cluj-Napoca, Romania
• Университет "Св. св. Кирил и Методий", Скопие, Македония,

as well as

• Institute of Mathematics and Informatics, Bulgarian Academy of Sciences
• National Laboratory of Computer Virology, Bulgarian Academy of Sciences
• Framework Agreement with the Bulgarian Chamber for Commerce and Industry-Branch Blagoevgrad
• DAAD Project "Center of Excellence for Applications of Mathematics" (2001-2016):

http://www2.math.uni-wuppertal.de/~heilmann/SEE/coordinators_and_partners.html