National Kidney Foundation
http://www.kidney.org/

The Lupus Foundation of America
http://www.lupus.org/

American Association of Kidney Patients
http://www.aakp.org/

The Foundation for IgA Nephropathy
http://www.igan.ca/

iKidney.com - Worldwide Kidney Disease Community
http://www.ikidney.com/iKidney/

National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), NIH
http://kidney.niddk.nih.gov/