The present invention is intended to provide a chicken flavor composition and a chicken flavor enhancer with which a more desirable chicken flavor can be obtained, and to provide a food, a drink or a seasoning that contains the composition or the enhancer. The present invention is concerned with a chicken flavor composition and a chicken flavor enhancer that contain at least one of 1,5-octadien-3-ol and 1,5-octadien-3-one, and a food, a drink or a seasoning that contains the composition or the enhancer.