The Arizona Complex League Reds are a Rookie-level affiliate of the Cincinnati Reds, competing in the Arizona Complex League of Minor League Baseball. The team plays its home games at Goodyear Ballpark in Goodyear, Arizona. 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, Dominican Republic, Venezuela, Cuba, Japan, and other countries.

The Cincinnati Reds previously fielded a Rookie-level team in the Gulf Coast League (GCL) during three tenures (1968–1973, 1984–1990, and 1999–2009) known as the Gulf Coast League Reds. During 2004–2009, the team played home games at Ed Smith Stadium in Sarasota, Florida.^{[citation needed]}

In 2010, when the major-league Reds moved their spring training headquarters from Florida to Arizona, the Rookie-level team also relocated and became members of the Arizona League (AZL), and were renamed as the Arizona League Reds. The team has competed in Arizona since then. Prior to the 2021 season, the Arizona League was renamed as the Arizona Complex League (ACL).

Notable players for the team have included: