Palm Beach Cardinals
- Location: Jupiter, FL
- League: Florida State League 2003-2019; Low-A Southeast 2021-
- Affiliation: St. Louis Cardinals 2003-present
- Ballpark: Roger Dean Stadium
The Palm Beach Cardinals of the Florida State League have been an affiliate of the St. Louis Cardinals since the club began play in 2003. They play their home games at Roger Dean Stadium, which they share with the Jupiter Hammerheads of the same league. In 2005, the Cardinals won the Florida State League championship. From 1987-2002, the franchise was known as the Charlotte Rangers.
- In 2017, the championship series between Palm Beach and Dunedin was cancelled because of Hurricane Irma; both teams were declared Co-Champions.