Jimmy Siemers (born March 24, 1982) is a professional 3-event water skier.
He is currently on the MasterCraft Pro Ski Team and is a previous world record-holder in the jump event, with a 236-foot jump 66.8 meters.
He is a former member of the Arizona State University Water Ski Team, for which he won the trick event at collegiate nationals four times in his four years on the team.