Search for Funding  Search all federally-funded grant and fellowship opportunities  Search both federal and private grant and fellowship opportunities  another search for funding, categorized by research topic  Centers for Disease Control and Prevention  National Institutes of Health  SAMHSA (Substance Abuse and Mental Health Services Adminstration)  Veteran's Affairs  Health Resources and Services Administration

How to find out if something's already been funded by the NIH:

NIH RePORTER (Formerly known as CRISP):