Oberle, Jean Greggie Fine Art, Atlanta, GA
O'Brien, Don Don O'Brien Fine Art, Buzzards Bay, MA
Obuchi, Tamaki Fraser Gallery, Washington, DC
Ochs, Jody Gallery 9, Banner Elk, NC
O'Connor, Madeline (b.1931) Moody Gallery, Houston, TX
O'Connor, Nancy (b.1957) Moody Gallery, Houston, TX
O'Connor, Robert J. Thomas Jacoby Fine Art, Cashiers, NC
O’Day, Kathy Mack McBride Gallery, Annapolis, MD
Oeder, Georg Tam O’Neill Fine Arts, Denver, CO
Offeman, Jim Story Sloane's Gallery, Houston, TX
Oh, Alice Nexus Foundation, Philadelphia, PA
Ojima, Masuo (ceramic) Spectrum Galleries Fine Art, Folsom, CA
Ojo, Albert Jide 11ArtsMusee, NY, NY
Oliver, Doug Joan Cawley Gallery, Ltd., Scottsdale, AZ
Olson, Derek (woodcarving)  
Okamoto, Ayao Overseas Arts, LLC, Wilmington, DE
O'Keeffe, Georgia Hirschl & Adler Galleries, NY, NY
Joan Cawley Gallery, Ltd., Scottsdale, AZ
Nedra Matteucci Galleries, Santa Fe, NM
Spanierman Gallery, NY, NY
O'Meallie, Sean (sculpture) Harmony Park Gallery, Fort Collins, CO
Opalski, Douglas (watercolor)  
Orbenz, Evan McTara Gallery, Trumansburg, NY
Orekhov, Lev Russian Colours Fine Art Gallery, St. Petersburg, Russia
Oretsky, Barry Rehs Gallery, New York, NY
Orio, Echave y (Mexico) Arte para colleccionistas, Mexico City, Mexico
Orlandini, Fabrizio Galleria D'Arte, Lucca, ITA
Orman, Jack (prints) Harmony Park Gallery, Fort Collins, CO
Orozco, Jose Clemente (Mexico) Arte para colleccionistas, Mexico City, Mexico
Orozco, Luis (Colombia) Arte Inc. Colombia
Orrea, Carlos (Colombia) Arte Inc. Colombia
Orsillo, Bob (photo) Orsillo's Gallery, Nottingham, NH
Orsini, Myrna Freed Gallery, Lincoln City, OR
Ortiz, Manuel Ángeles (Spain) Luis Burgos Galeria De Arte, Bilbao, Spain
Ortuño, Roberto Place des Arts, Paris, FRA
Sala Parés, Barcelona, Spain
Osada, Vyacheslav (paintings) New Images Gallery
Osborne, Lyndal Horizon/Laverty Fine Art, Vancouver, CAN
Osipov, Sergey  (Russia) Russian Colours Fine Art Gallery, St. Petersburg, Russia
Osman, Mohamed Buwe Sidi Merka Gallery, Auburn, WA
Osmar (Oliveros, Osmar)  
Ostermiller, Dan Nedra Matteucci Galleries, Santa Fe, NM
Oteiza, Jorge (Spain) Luis Burgos Galeria De Arte, Bilbao, Spain
Otiev, Viktor Russian Colours Fine Art Gallery, St. Petersburg, Russia
Otis, George Demont Robert Raynolds Fine Arts, Atascadero, CA
Otsuka, Hisashi Tower Gallery, Sacramento, CA
Otterness, Tom Marlborough, NY, NY
Oulton, Thérèse Marlborough, London, UK
Oviedo, Ramon Banco Central de la Republica Domenicana
Casa de las Americas, La Habana, Cuba
Fundacion Guayasamin, Quito, Ecuador
Galeria Diaz Mancini, Caracas, Venezuela
Gallery of Contemporary Art, Washington, DC
La Pinacoteca, Domenican Republic
Museo de Arte Moderno, Santo Domingo, Domenican Republic
Museo Metropolitano de Panama, Panama
Museo Nacional de Nicaragua, Nicaragua
Organization of American States, Washington, DC
Virginia Miller Galleries, Coral Gables, FL
UNESCO, Paris, France
Ovchinnikov, Vladimir (Russia) Russian Colours Fine Art Gallery, St. Petersburg, Russia
Owen, Claire Nexus Foundation, Philadelphia, PA
Owen, Paula Primary Objects Fallery, San Antonio, TX
Owen, Tom Capricorn Galleries, Potomac, MD
Owens, Scott (Sculpture)