• High Flux Isotope Reactor, Oak Ridge National Laboratory
• Neutron Scattering Society of America
• IPNS, Argonne National Laboratory
• NRC Steacie Institute Neutron Program, Chalk River Laboratories, Canada
• U. of Illinois Triga Reactor/Neutron Scattering Group
• Los Alamos Neutron Scattering Center and Energy Research Program
• Missouri University Research Reactor
• NIST Research Reactor, Gaithersburg
• US Spallation Neutron Source
• Canadian Neutron Facility(CNF)/Centre canadien de neutrons(CCN)
• MIT Nuclear Reactor Laboratory

Europe

• European portal for neutron scattering
• Institut Laue-Langevin, Grenoble, France
• ISIS, UK
• KFA, Jülich, Germany
• LLB at Saclay, France
• Nuclear Physics Institute, Rez, Czech Republic
• GKSS Geesthaht, Germany
• Risø National Laboratory, Denmark
• Berlin Neutron Scattering Center (BENSC), Hahn-Meitner-Institut (HMI), Germany
• GKSS/FRG-1 Reactor + HASYLAB (Hamburg, Germany)
• Paul Scherrer Institut (PSI), Switzerland
• KFKI, Hungary
• Studsvik Neutron Research Laboratory, Sweden

and elsewhere ...

• ISSP Neutron Scattering Laboratory, Tokai, Japan
• JAERI Research Reactors,JAERI, Tokai,Japan
• Hi-Flux Advanced Neutron Application Reactor, Korea
• Fast Pulsed Reactor at Dubna
• KENS Neutron Scattering Facility, Tsukuba, Japan
• High Flux Australian Reactor, Lucas Heights

Some other resources

• Argonne Neutron Scattering Software Page
• Worldwide Directory of SANS Instruments