AFM 2020 is the 13th International Conference on Advances in Fluid Mechanics. The meeting is reconvened following the success of all previous conferences in the series, the first of which took place in New Orleans (1996), followed by Udine (1998); Montreal (2000); Ghent (2002); Lisboa (2004); Skiathos (2006); the New Forest, home of the Wessex Institute (2008); The Algarve (2010); Split (2012); A Coruña (2014), Ancona (2016) and Ljubljana (2018).