There are many Federal agencies and private Foundations that are potential funders for a grant project. Although certainly not exhaustive, the following list is a good place to start.

Grants.gov

All Federal grant applications will soon require submission through the grants.gov web site. How to submit grants through grants.gov.

Funding Agencies and Foundations

A. L. Mailman Family Foundation
AAUW Fellowships/Grants/Awards
Abelard West
Abbott Laboratories Fund
Acorn Foundation
Adobe Systems
Aetna Foundation
Agilent Technologies
Air Force Office of Scientific Research
Albertsons
Alfred P. Sloan Foundation
Ambrose Monell Foundation
American Eagle Outfitters Foundation
American Express
American Legion Child Welfare Foundation
Andrew W. Mellon Foundation
Andrus Family Fund
Applied Materials
AT&T Foundation
Barbara Bush Foundation for Family Literacy
Best Buy Children's Foundation
Bill and Melinda Gates Foundation
Blockbuster
Boeing Charitable Contributions
Burroughs Wellcome Fund
Cable Positive Tony Cox Community Fund
Carnegie Corporation of New York
Charitable Choice
Charles Stewart Mott Foundation
Cingular
Cisco Foundation
Educational Foundation of America
Energy Foundation
Ewing Marion Kauffman Foundation
Federal Grant Opportunities
Ford Foundation
FujiFilm
Fulbright Scholar Program
Future of Children - David and Lucile Packard Foundation
G. Unger Vetlesen Foundation
Garth Brooks' Teammates for Kids Foundation
Georgia-Pacific Foundation
Gerber Foundation
Glasser Family Foundation
Graham Foundation
Grammy Foundation
Grantmakers of Oklahoma
H.B. Heron Foundation
H. J. Heinz Company Foundation
Henry J. Keiser Family Foundation
Henry Luce Foundation
Hitachi Foundation
Home Depot Foundation
Hilton Hotels Corporation
Humana Foundation
IBM
Ittleson Foundation
Jack Kent Cooke Foundation Innovation Fund
JEHT Foundation (Justice, Equality, Human Dignity and Tolerance)
Jimmy Buffett's Singing for a Change
J. Paul Getty Foundation
James D. McDonnell Foundation
John D and Catherine T. MacArthur Foundation
John Simon Guggenheim Memorial Foundation
Joseph P. Kennedy, Jr., Foundation
Josiah Macy, Jr. Foundation
JPMorganChase
Langeloth Foundation
Lawrence Foundation
Lowe's Charitable and Educational Foundation
Lumina Foundation
Mabee Foundation
Mary Byron Foundation
MetLife Foundation
Microsoft
Ms. Foundation for Women
National Endowment for the Arts
National Endowment for the Humanities
National Fish and Wildlife Foundation
National Geographic Society Conservation Trust
National Institutes of Health
National Science Foundation (NSF)
NEC Foundation of America
Noble Foundation
Oklahoma Arts Council
Oklahoma Center for the Advancement of Science & Technology (OCAST)
Oklahoma Grantmakers
Oklahoma Humanities Council
Oracle
Pew Charitable Trusts
Robert Wood Johnson Foundation
Sarkeys Foundation
SBC Foundation
Smithsonian Fellowships
Society for the Arts in Healthcare
Spencer Foundation
Starbucks Foundation
The Foundation Center Cooperating Collections of Oklahoma
The Foundation Center's Philanthropy News Digest RFP Bulletin
Toshiba America
Turner Foundation, Inc.
UPS Foundation
U.S. Department of Agriculture
U.S. Department of Education
U.S. Department of Health and Human Services
U.S. Department of Justice
Verizon Foundation
Walgreen Co.
Wal-Mart Foundation
W.K. Kellogg Foundation
William Randolph Hearst Endowed Scholarship for Minority Students
Woodrow Wilson International Center for Scholars
Xerox Foundation

Resources

Cherokee Nation
Guide to Funding Sources in Eye and Vision Research
Library of Congress
Office of Faith-Based and Community Initiatives
Office for Human Research Protections Assuarances and IRB Registration
Oklahoma Aeronautics Commission
Oklahoma Biological Survey
Oklahoma Capitol Complex and Centennial Commemoration Commission
Oklahoma Commission on Children and Youth
Oklahoma Conservation Commission
Oklahoma Council on Law Enforcement Education and Training (CLEET)
Oklahoma Department of Agriculture, Food and Forestry
Oklahoma Department of Career and Technology Education
Oklahoma Department of Commerce
Oklahoma Department of Environmental Quality
Oklahoma EPSCoR
Oklahoma Department of Human Services
Oklahoma Department of Labor
Oklahoma Department of Libraries
Oklahoma Energy Resources Board
Oklahoma Film and Music Commission
Oklahoma Foundations
Oklahoma Health Care Authority
Oklahoma Historical Society
Oklahoma House of Representatives
Oklahoma Housing Finance Agency
Oklahoma Human Rights Commission
Oklahoma Indian Affairs Commission
Oklahoma Indigent Defense System
Oklahoma Insurance Department
Oklahoma Legislative Service Bureau
Oklahoma Office of Handicapped Concerns
Oklahoma Office of Homeland Security
Oklahoma Office of Juvenile Affairs
Oklahoma Office of State Finance
Oklahoma Office of the State Fire Marshal
Oklahoma State Department of Education
Oklahoma State Department of Health
Oklahoma State Regents for Higher Education
Small Business Administration
Tahlequah Chamber of Commerce
The Foundation Center
U.S. Department of Commerce
U.S. Department of Defense
U.S. Department of Energy
U.S. Department of Homeland Security
U.S. Department of Housing and Urban Development
U.S. Department of Interior
U.S. Department of Labor
U.S. Department of Labor, Employment and Training Administration
U.S. Department of State
U.S. Department of State Bureau of International Information Programs
U.S. Department of Transportation
U.S. Department of Veterans Affairs
U.S. Environmental Protection Agency
United States Institute of Peace