International Conference on Precision Physics of Simple Atomic Systems – PSAS’2022 – is the 11th edition of the PSAS conference series, will take place in Warsaw, from 16 to 20 May 2022. The conference is organised by the Faculty of Physics at the University of Warsaw and the Candela Foundation. The conference is endorsed by the CODATA Task Group on Fundamental Constants and supported by the International Union of Pure and Applied Physics (IUPAP).