We are pleased to announce the 4th Mol. Micro. Meeting to be held September 16-18, 2015, at the University Campus “Altes AKH” in Vienna. This conference addresses Microbiologists who study the molecular biology of microorganisms with a focus on prokaryotes and fungi. Invited speakers are main authors of selected papers that were recently published in the journal Molecular Microbiology. To attract young researchers the meeting features short talks selected from submitted abstracts and an evening poster session.