The Florida Complex League Red Sox are a professional baseball team competing in the rookie-level Florida Complex League (FCL) of Minor League Baseball. The team is owned and operated by the Boston Red Sox of Major League Baseball (MLB). Prior to 2021, the team was known as the Gulf Coast League Red Sox. The team is located in Fort Myers, Florida, and plays its home games at JetBlue Park in the Fenway South complex.

The team is composed mainly of players who are in their first year of professional baseball, either as draftees or non-drafted free agents from the United States, Canada, the Dominican Republic and Venezuela, among other countries. Injured players from the major-league Red Sox and their minor-league system occasionally play rookie-level games as their first step on a rehabilitation assignment.

In 1988, the Boston Red Sox and Seattle Mariners fielded a cooperative rookie-level team in the Arizona League (AZL), known as the AZL Mariners/Red Sox.^[1] The cooperative was not renewed beyond that single season.

In 1989, the Red Sox began fielding their own rookie-level team in the Gulf Coast League (GCL).^[1] The team first played in Winter Haven, Florida, moved to City of Palms Park in Fort Myers in 1993, then moved to its current facility in 2012. Prior to the 2021 season, the Gulf Coast League was renamed as the Florida Complex League (FCL).

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The team has finished first in its division 12 times, most recently in 2018. The team has won the league championship three times: 2006, 2014, and 2015. The team's best record came in 2015 when the club was 41–17, a .707 winning percentage.