O'Neil, Charles
- Wire sculptures, drawings, paintings and architectural art of a full time artist and part-time instructor at Haliburton School of the Arts.
- http://www.charlesoneil.com

Ogunsanya, Sangoyemi A.
- Mixed media collages, sculptures and performance-based installations featuring African myths, and woodcarvings in the tradition of the Yoruba of Nigeria and the Akan of Ghana.
- http://www.sangoyemi.com/

Okshteyn, Shimon
- Consists of the artist's official site. Features images of his paintings, sculptures, drawings and prints, and presents his curriculum vitae.
- http://www.okshteyn.com/

Oepen, Gisela van
- Creates stylized oil and watercolor paintings, bordering on abstractism, and sculpture.
- http://www.van-oepen.com/

Ory, Toni
- Original watercolor and mixed media artwork, and calligraphy services.
- http://www.toniory.com/

Ogrodnik, Martin Jan
- Collection of surreal oil and watercolor paintings, drawings, digital art, and photography.
- http://www.ogrodnik.com

Olive
- Photography and paintings, animated graphics. Flash required.
- http://www.olive47.com/

Olejarz, Harold
- Digital art, performance art, and sculpture. Information about education in Art and Technology is included.
- http://www.olejarz.com/

O'Flynn, Valery
- Paintings, original prints and photographs by a contemporary Canadian artist
- http://www.webgenus.com/voflynn