The free-to-enter contest will be judged initially by a select industry panel, including Danny Brooke-Taylor, the joint executive creative director at Dare, Daren Rubins, the chief executive at PHD, and the ISBA director of media and advertising Bob Wootton.
However, a public vote will eventually decide which ads make the cut.
Work will be chosen from each of the five decades from the 60s onwards and the final gallery unveiled in March.
To enter, upload images and credits by 24 January at www.outdoorhalloffame.co.uk. Public voting via the site begins on 9 February.