O. elegans

O. elegans may refer to:
 * Ochthiphila elegans, a synonym for Chamaemyia elegans a fly found in Europe
 * Okenia elegans, a sea slug
 * Omobranchus elegans, a combtooth blenny found in the Northwest Pacific Ocean
 * Ophisops elegans, the snake-eyed lizard, a lizard found in the Mediterranean region and Central Asia
 * Orestias elegans (fish), a species of fish
 * Orestias elegans (plant), a species of orchids
 * Orthonevra elegans, a hoverfly found in Europe and Asia
 * Ouratea elegans, a plant endemic to Jamaica
 * Oxyloma elegans, a small land snail found in Europe