No mundo todo, há vários institutos, centros e grupos de pesquisa, academias e outras entidades que pesquisam os mais variados approaches em Complexidade, nas ciências naturais, nas ciências sociais, na matemática, na computação, e assim por diante. Existem institutos ligados a Universidades e entidades independentes.
Segue uma lista indicativa com contatos na Complexity Community:
The Biocomplexity Institute – Indiana University
Centre for Complexity Science – University of Warwick
Center for Complex Network Research – Northeastern University
Center for Complex Systems Research – University of Illinois
Centre for Interdisciplinary Methodologies – University of Warwick
Center for Neurodynamics – University of Missouri
Center for Nonlinear Dynamics – University of Texas at Austin
Center for the Study of Complex Systems – University of Michigan
Centre for Strategic Futures – Singapore Government
Chair of Sociology, in particular of Modeling and Simulation – Swiss Federal Institute of Technology
Complex Systems Group – University of Alaska Anchorage
Complex Systems Research Center – University of New Hampshire
Complexity Group – London School of Economics
Complexity Program – Nanyang Technological University, Singapore
Escuela Latinoamericana de Pensamiento y Diseño Sistémico
Institute for Complex Systems Simulation – University of Southampton
International Federation for Systems Research
New England Complex Systems Institute
Society for Evolutionary Analysis in Law
Tributação, Complexidade e Desenvolvimento Sustentável – Pontifícia Universidade Católica do Paraná
Direito e Complexidade 