The International Journal of General Systems is a peer-reviewed scientific journal covering research on basic and applied aspects of systems science and systems methodology. Its focus is on "general systems" – systems ideas that have general applicability. The founding editor of the journal was George Klir, who served as editor-in-chief from 1974 to 2014. Since 2015, the editor-in-chief has been Radim Belohlavek. According to the Journal Citation Reports, the journal has a 2014 impact factor of 1.637.