Osborne, Martyn H - Portfolio featuring landscape and wildlife images from around the world. - http://www.inspiredbytravel.com/
Oddone, Gigi - Collection of images from Sri Lanka, Bali, Thailand, Mexico, Greece, and London. - http://digilander.libero.it/travelphoto/
Otte, Christian - Scenic photographs in color and black and white from Europe and the United States. - http://www.ottefoto.net/
Oswalt, John - Photographs from his many trips, including an overland tour from Istanbul to Cairo, another all across Africa, and a third to the Galapagos Islands. - http://www.jao.com/