The institutions that enabled SDSS-I and SDSS-II are:

• American Museum of Natural History

• University of Basel

• Cambridge University

• Case Western Reserve University

• University of Chicago

• Fermilab

• Institute for Advanced Study

• Japan Participation Group

• Johns Hopkins University

• Joint Institute for Nuclear Astrophysics

• Kavli Institute for Particle Astrophysics and Cosmology

• Korean Scientist Group

• Los Alamos National Laboratory

• Ohio State University

• Max-Planck-Institute for Astronomy

• Max-Planck-Institute for Astrophysics

• New Mexico State University

• University of Pittsburgh

• University of Portsmouth

• Astrophysical Institute Potsdam

• Princeton University

• United States Naval Observatory

• University of Washington