The Mission Viejo Nadadores is one of the largest swimming and diving clubs in the United States. The team is located in Mission Viejo, California, training at the Marguerite Aquatic Center. The "Nadadores" were started in 1968 and have had athletes at every Olympics since 1976. The team holds the record for winning the most team titles at the USA swimming Nationals, having won 47.
At the 1984 Summer Olympics, Nadadores athletes won 13 medals (10 Gold). Notable alumni include: Brian Goodell, Shirley Babashoff, Mary T. Meagher, Robin Leamy, Greg Louganis, Amy Shaw, Ricardo Prado, Louise Messinger, Jesse Vassallo, Tiffany Cohen, Chloe Sutton, Dara Torres, Coach Mike O'Brien, Coach Mark Schubert, Coach Terry Stoddard, Coach Dr. Sammy Lee, and Coach Jim Montrella.
Currently the Nadadores are led by American Swimming Coaches Association Hall of Fame member, Coach Bill Rose.Janet Ely is the High Performance Director of the Diving Team. At the 2004 Summer Olympic Games, Nadadore Larsen Jensen (American Record Holder) captured a Silver Medal in the Men's 1500 freestyle.
In 2007, the oldest swimming world record was broken by Kate Ziegler in the 1500m freestyle at the TYR Swim Meet of Champions, which the team hosts annually.