Chelsey Marie Reist is a Canadian actress, television host and dancer from Edmonton, Alberta, Canada.
She starred as Rachel in the 2012 horror film No Tell Motel, and she appeared in 12 Rounds: Reloaded. In 2013, she appeared in the remake of the 1995 horror film Embrace of the Vampire. Reist also hosted the Canadian television series Discovering Great Towns. Since 2014, she has appeared as Harper McIntyre in The CW's The 100.