Marc Van Montagu (born 10 November 1933) is a Belgian molecular biologist. He was full professor and director of the Laboratory of Genetics at the faculty of Sciences at Ghent University (Belgium) and scientific director of the Genetics Department of the Flanders Interuniversity Institute for Biotechnology (VIB). Together with Jozef Schell he founded the biotech company Plant Genetic Systems Inc. (Belgium) in 1982, of which he was Scientific Director and member of the board of Directors. 

Marc Van Montagu was also involved in founding the biotech company CropDesign, of which he was a Board member from 1998 to 2004. He is president of the European Federation of Biotechnology (EFB) and of the Public Research and Regulation Initiative (PRRI).In June 2013, He was named a laureate of the prestigious 2013 World Food Prize for developed science of modern plant biotechnology supporting improved sustainability and global food security.