Theodore Waddell's work is held in the permanent collections of museums, universities and corporations across the United States, and in U.S. embassies around the world through the Department of State's Art in Embassies Program.
- Amarillo Art MuseumAmarillo, Texas
- Apple Computer Inc.Saratoga, California
- ARCO CorporationLos Angeles, California; Philadelphia, Pennsylvania
- Autry MuseumLos Angeles, California
- Bank of AmericaSan Francisco, California
- Boise Art MuseumBoise, Idaho
- Buffalo Bill Historical MuseumCody, Wyoming
- Carnation CompanyLos Angeles, California
- Cheney Cowles MuseumSpokane, Washington
- Citadel CorporationScottsdale, Arizona
- Clorox CorporationSan Francisco, California
- Colorado Springs Fine Arts CenterColorado Springs, Colorado
- Custer County Art CenterMiles City, Montana
- Dallas Museum of ArtDallas, Texas
- Dennos MuseumTraverse City, Michigan
- Denver Art MuseumDenver, Colorado
- Eastern Idaho Museum of ArtIdaho Falls, Idaho
- Eiteljorg MuseumIndianapolis, Indiana
- El Paso Museum of ArtEl Paso, Texas
- Eureka Opera HouseEureka, Nevada
- Federal Reserve BankMinneapolis, Minnesota; Helena, Montana
- First Interstate BankLas Vegas, Nevada
- Frederick R. Weisman CompanyLos Angeles, California
- Frito-Lay CorporationDallas, Texas
- Goddard Center for Performing and Visual ArtsArdmore, Oklahoma
- Gonzaga University – Jundt Art MuseumSpokane, Washington
- Hallie Ford Museum of Art – Willamette UniversitySalem, Oregon
- Hallmark Art CollectionKansas City, Missouri
- Hallmark CorporationKansas City, Missouri
- Harrah's EnterprisesReno, Nevada
- Hockaday Museum of ArtKalispell, Montana
- Holter Museum of ArtHelena, Montana
- International Business Machines (IBM)
- John Michael Kohler Arts CenterSheboygan, Wisconsin
- Kansas City Art InstituteKansas City, Missouri
- Los Angeles County Museum of ArtLos Angeles, California
- Marriott CorporationSan Antonio, Texas
- Merck CorporationWest Point, Pennsylvania
- Michener CollectionUniversity of Texas, Austin, Texas
- Microsoft CorporationSeattle, Washington
- Missoula Museum of the ArtsMissoula, Montana
- Mobil OilNew York, New York
- Mulvane Art MuseumTopeka, Kansas
- Museum of Northwest ArtLa Conner, Washington
- Nestlé CorporationLos Angeles, California
- Nevada Museum of ArtReno, Nevada
- Nicolaysen Art MuseumCasper, Wyoming
- NordstromSeattle, Washington
- North Dakota Museum of ArtGrand Forks, North Dakota
- North Dakota State University Memorial Union GalleryFargo, North Dakota
- Northern Arizona UniversityFlagstaff, Arizona
- Northwest Museum of Arts & CultureSpokane, Washington
- Oats Park Art CenterFallon, Nevada
- Omaha National BankOmaha, Nebraska
- Palm Springs Art MuseumPalm Desert, California
- Paris Gibson Square Museum of ArtGreat Falls, Montana
- Pillsbury CorporationMinneapolis, Minnesota
- Polk Museum of ArtLakeland, Florida
- Portland Art MuseumPortland, Oregon
- Progressive CorporationPepper Pike, Ohio
- Quad GraphicsWest Allis, Wisconsin
- Rayovac CorporationMadison, Wisconsin
- Ringo Starr
- Robert Redford
- Rocky Mountain CollegeBillings, Montana
- San Jose Museum of ArtSan Jose, California
- Security Pacific BankLos Angeles, California
- Sheldon Museum of ArtLincoln, Nebraska
- Sierra Pacific PowerReno, Nevada
- Spencer Museum of ArtUniversity of Kansas, Lawrence, Kansas
- Springfield Art MuseumSpringfield, Missouri
- Stanford University HospitalStanford, California
- Topeka Public LibraryTopeka, Kansas
- Tucson Museum of ArtTucson, Arizona
- United AirlinesChicago, Illinois
- United Missouri BankKansas City, Missouri
- University HospitalUniversity of Washington, Seattle, Washington
- University of KansasSchool of Arts, Lawrence, Kansas
- University of New MexicoAlbuquerque, New Mexico
- University of North DakotaFargo, North Dakota
- University of TexasAustin, Texas
- University of WyomingLaramie, Wyoming
- Western Folklife CenterElko, Nevada
- Whitney Gallery of Western ArtCody, Wyoming
- Yellowstone Art MuseumBillings, Montana
Backdrop: Horse #2, 1985 · Oil on canvas, 60 × 78 in