The Complex Systems (and Nonlinear Dynamics) Group was formed in 1998 and has been working actively since 2004. Currently, 5 faculty members of the Physics Department are directly or indirectly involved, 4 associated researchers of the Instituto de Investigaciones Físicas (IIF), a professor of the Biology Department, and students of different careers of the Universidad Mayor de San Andrés (UMSA). Up to now, 3 post-graduate and 10 graduates students have been trained to perform research and do graduation theses under the supervision of faculty members that belong to this group. Since 2000, there have been around 60 publications in both Bolivian and foreign magazines, which included different topics, such as synchronization, effects of noise in dynamic systems, economics, quantum computing, self-organization, chaos, oscillations, time series analysis, complex networks, magnetic systems and phase transitions. Periodically, at least once a year, national or international conferences are held, showing the results of the different investigations carried out by members of the group. The group also organizes the Bolivian Workshop on Complex Systems, which is already in its XV version, dealing in each of them different topics. The group has a close collaboration with the Group of the Condensed Matter of the Physics Department at UMSA and with the following foreign universities: Universidad de Las Palmas en Gran Canaria, Spain; Universidad de la República, Uruguay; UFP, Brasil; UNSA, Peru; UTA, Chile; ULB, Belgium, and HU, Germany.