Accelerator Centers, HEP and Scattering communities

International Atomic Energy Agency (IAEA) Interactive Map of Accelerator-Based Neutron Source, Boron Neutron Capture Therapy Facilities, Electrostatic Accelerators, Synchrotron Light Sources and X-ray Free Electron Laser Sources.
Interactive Map of Particle Accelerators worldwide (MOOC Accelerate Your Teaching)
Interactive Map of the Light Sources worldwide.There are more than 50 light sources in the world (operational, or under construction). See the Upgrade Project and the Home Page: lightsources.org.
Light Sources for Africa, the Americas, Aia, Middle East and Pacific (LAAAMP)
A large number of proton/ion therapy facilities are operating, under construction or planned (source of the links: Particle Therapy Co-operative Group – PTCOG)
See Neutron Sources list (via neutronsources.org)

Few Accelerator Laboratories and Agencies are listed below:

Brookhaven National Laboratory (BNL) – US
European Organization for Nuclear Research (CERN) – CH
Diamond Light Source – UK
Deutsches Elektronen-Synchrotron DESY – DE
European Synchrotron Radiation Facility (ESRF) – FR
European Spallation Source (ESS) – SE
European XFEL – DE
Fermi National Accelerator Laboratory (FNAL) – US
Heavy Ion Accelerator Facility (HIAF) – AU
Korea Atomic Energy Research Institute (KAERI) – KR
Institute of Modern Physics (IMP) – CN Chinese Academy of Science
International Atomic Energy Agency (IAEA) – AT Intro: “IAEA activities in support of nuclear physics research and applications”: Recording and Slides
John Adams Accelerator (JAI)– UK University of Oxford
High-energy accelerator (KEK) – JP
Lawrence Berkeley National Laboratory (LBNL) – US
(Brazilian) Synchrotron Light Laboratory Laboratório Nacional de Luz Sincrotron (LNLS) – BR
Paul Scherrer Institute (PSI) – CH
Science and Technology Facilities Council (STFC) – UK ISIS – Neutron and Muon Sources
Shanghai Proton and Heavy Ion Center (SPHIC) – CN
Spallation Neutron Source – Oak Ridge National Laboratory (SNS) – US
Synchrotron-light for Experimental Science and Applications in the Middle East (SESAME) – JP
X-TechLab – BENIN Intro: “X-TechLab Achievements” by Marielle Agbahoungbata