Alanna Shelast (born April 14, 1987) is a Canadian model who hails from Kelowna, British Columbia.

Widely known for her association with with the first cycle of Canada's Next Top Model, Shelast was originally not chosen as one of the top ten finalists on the series. It was after one contestant could no longer be a part of the competition that Shelast was brought in as a last minute replacement. It was her simple yet dynamic beauty and her sweet and pleasant nature that made Alanna an early fan favourite. While not as immediately attention grabbing as some of the other contestants, Alanna was a quick study whose ability to improve week upon week and transform into a bonafied model that took her to the series finale, where she ultimately took second place to Whitby, Ontario's Andrea Muizelaar. In a three to two final decision Alanna was as close as one could possibly get without winning the actual title, but did walk away with an enormous boost in self confidence when, during the judge's deliberation America's Next Top Model's own Jay Manuel held up her photo and stated "This could be the new frigging Linda Evangelista!"

Originally signed to Jett Models of Vancouver, British Columbia, following the show Alanna signed with Sutherland Models, the agency with whom Canada's Next Top Model winner Andrea Muizelaar was signed as a part of her victory. Alanna has since left Sutherland Models to pursue other interests and options.