Aberdeen IronBirds

• High-A (2021–2025)

• Class A-Short Season (2002–2020)

• South Atlantic League (2021–2025)

• New York–Penn League (1977–2020)

• Baltimore Orioles (2002–2025)

• Florida Marlins (1996–2001)

• Boston Red Sox (1993–1995)

• Chicago White Sox (1988–1992)

• Philadelphia Phillies (1986–1987)

• Independent (1981–1985)

• Toronto Blue Jays (1977–1980)

• Aberdeen IronBirds (2002–present)

• Utica Blue Sox (1981–2001)

• Utica Blue Jays (1977–1980)

The Aberdeen IronBirds are a summer collegiate baseball team based in the city of Aberdeen in Harford County, Maryland. They were previously the High-A affiliate of the Baltimore Orioles and competed in the South Atlantic League from 2021 to 2025. Prior to that, they were members of the New York–Penn League from 1977 to 2020.

The team is owned by Attain Sports with retired Orioles player Cal Ripken Jr maintaining a minority stake in the team after having purchased the team, then known as the Utica Blue Sox, and moved them to his hometown of Aberdeen in time for the 2002 season. The IronBirds play their home games at Ripken Stadium, which is visible from I-95. On August 16, 2006, the IronBirds played host to the New York–Penn League All-Star Game. They also hosted the New York-Penn League All-Star Game on August 18, 2015. Ripken Stadium was also used for the Cal Ripken World Series in 2003 and 2004, forcing the team to go on extended road trips, 20 or more games, during the youth competition. The Cal Ripken World Series moved across the street to Cal Sr.'s Yard in 2005.

The name "IronBirds" was chosen for two reasons: Cal Ripken's "Ironman" streak of 2,632 consecutive baseball games played and the team's affiliation with the Orioles (the Baltimore team is often referred to as "The Birds"). The former team logo featured a silver airplane marked with Ripken's number 8, which also refers to the nearby Aberdeen Proving Ground U.S. Army installation. The team mascots are gray birds named Ferrous and Ripcord.

The record of most RBIs in a single month was set by Robbie Widlansky in July 2008. On August 26, 2013, Conor Bierfeldt hit his 12th home run of the season, setting a new IronBirds single-season record. He broke the previous record held by David Anderson set in the 2010 season. On September 2, 2013, The IronBirds clinched their first McNamara Division Title.

In conjunction with Major League Baseball's restructuring of Minor League Baseball in 2021, the IronBirds were organized into the 12-team High-A East. In 2022, the High-A East became known as the South Atlantic League, the name historically used by the regional circuit prior to the 2021 reorganization.

The IronBirds' 2012 and 2013 seasons were the subject of a book written by the team's former clubhouse attendant, Greg Larson. Clubbie: A Minor League Baseball Memoir was released in 2021.

In October 2024, Cal Ripken Jr. and his brother Billy Ripken sold their majority stake to Attain Sports Partners, owners of the Chesapeake Baysox, the Orioles’ Double-A affiliate, and the Frederick Keys of the MLB Draft League. In August 2025, it was announced that the Keys would replace the IronBirds as the Orioles' High-A affiliate, with the IronBirds moving to the MLB Draft League.