Dayle Haddon (born May 26, 1948) is a Canadian model and actress, presently known for promoting anti-aging products manufactured by L'Oréal. Additionally, she is credited as author of Ageless Beauty: A Woman's Guide to Lifelong Beauty and Well-Being.

During the earlier part of her career as a model, Haddon appeared on the covers of many top fashion and beauty magazines, as well as the cover of the Sports Illustrated Swimsuit Issue 45 years ago in 1973. Haddon also served as a wellness contributor to CBS News where she appeared regularly on The Early Show from 2005 to 2008.