David Acer (; born 27 February 1970) is a Canadian author, stand-up comedian, close-up magician, inventor of magic tricks, and co-host/co-writer of the syndicated television series Mystery Hunters.
His writing on Mystery Hunters earned him two Gemini Awards nominations (the Canadian equivalent of the Emmys) for Best Writing in a Children's Non-Fiction series (2005 and 2007), and he wrote a book based on his segments on the series called "Gotcha! 18 Amazing Ways to Freak Out Your Friends," published by Kids Can Press in 2008.
"Gotcha!" was a Canadian best-seller and was nominated for two children's book awards, a Willow Award and a Hackmatack Children's Choice Award, and won the Hackmatack award in 2008/2009.
David, a native of Montreal, has also written for other Canadian television shows such as Popular Mechanics for Kids, YTV's Prank Patrol and TVO's Finding Stuff Out.