This introductory school on “Rigidity, dynamics and geometric structures” is in conjunction with program at IHP on “Group Actions and Rigidity: Around the Zimmer Program” in Spring 2024. The field has undergone tremendous change in the last decade Many new deep results have been proven and novel methods have been introduced. The goal of the school is to introduce many people to these new developments. In particular, we want to train a new generation of mathematicians, from graduate students to postdoctoral fellows. The participants would come from all around the world, but also especially from France and other nearby countries. We plan to conduct mini-courses on background, technical tools and particular constructions and examples. We would incorporate problem and exercise sessions. Junior Researchers will present short research talks.