Dear colleagues, We are pleased to announce the workshop Phase Transitions and Particle Systems that will take place June 24-26, 2019 at the Weierstrass Institute in Berlin, see https://www.wias-berlin.de/workshops/PTPS19/ <https://www.wias-berlin.de/workshops/PTPS19/> . The aim of the workshop is to give an overview of recent developments on dynamic and static problems involving several interacting components. The scientific program is composed of two minicourses taught by Prof. David Dereudre (Lille University) and Prof. Kavita Ramanan (Brown University) and eight research talks by distinguished invited speakers. There will be also a poster session on Monday 26 June, to allow young researchers to present their ideas and results. Please note that places are limited and participation is possible only upon prior registration. Registration closes on May 12th, 2019. All details are specified on the website. We look forward to meeting you in Berlin. Best regards, The organizing committee Luisa Andreis, Wolfgang König and Robert Patterson