O'Beirne, Megan
- Oil and acrylic paintings from contemporary Irish visual artist and poet, with image galleries, biography, reviews and links.
- http://www.meganobeirne.com/

O'Brien, Judy
- Works include paintings in impressionist, traditional and fauvist styles. Reproductions are available.
- http://judyobrien.com/

Oden, Ron
- California painter of realist and expressionist works. Also has figure studies, biography, and coming events.
- http://www.ronoden.com/

Ostrovsky, Victor
- The compelling and enigmatic paintings by former Mossad case officer and now New York Times best selling author, Victor Ostrovsky.
- http://www.ostenart.com

Olivieri, Irene
- Idiosyncratic contemporary paintings depicting nudes and landscapes with interweaving of tiny text, often describing secrets of nature, love and intimacy. Intriguing, original and beautifully strange
- http://irenehardwickeolivieri.com

O'Mahony, Chamain
- New Orleans artist paints The Creole Cat in acrylics. Also available are prints, notecards, and hand-painted sunglass and eyeglass accessories.
- http://www.thecreolecat.com