# List of Baltimore Orioles minor league affiliates

The Baltimore Orioles farm system consists of seven Minor League Baseball affiliates in the United States and the Dominican Republic. Four teams are independently owned, while the other three—the Florida Complex League Orioles and two Dominican Summer League Orioles squads—are owned by the major league club.
The Orioles have been affiliated with the Double-A Chesapeake Baysox of the Eastern League since 1993, making it the longest-running active affiliation in the organization among teams not owned by the Orioles. Their newest affiliate is the Norfolk Tides of the International League, which became the Orioles' Triple-A club in 2007. The longest affiliation in team history was the 53-year relationship with the Rookie Appalachian League's Bluefield Orioles from 1958 to 2010.
The Orioles have the shortest cumulative distance between its four full-season minor league affiliates in baseball at 487 miles (784 km). The top four affiliates are located within a 200-mile (320 km) radius from Baltimore, with three of them situated in Maryland. Geographically, Baltimore's closest domestic affiliate is the Baysox of the Double-A Northeast, which is approximately 24 miles (39 km) away. Baltimore's furthest domestic affiliate is the Florida Complex League Orioles of the Rookie Florida Complex League some 892 miles (1,436 km) away.

## Baltimore Orioles
### 2021–present

The current structure of Minor League Baseball is the result of an overall contraction of the system beginning with the 2021 season. Class A was reduced to two levels: High-A and Low-A. Class A Short Season teams and domestic Rookie League teams that operated away from Spring Training facilities were eliminated. Low-A was reclassified as Single-A in 2022.
| Year | Triple-A | Double-A | High-A | Single-A | Rookie League | Foreign Rookie |
| 2024 | Norfolk Tides | Bowie Baysox | Aberdeen IronBirds | Delmarva Shorebirds | FCL Orioles | DSL Orioles 1 DSL Orioles 2 |
| 2023 | Norfolk Tides | Bowie Baysox | Aberdeen IronBirds | Delmarva Shorebirds | FCL Orioles | DSL Orioles 1 DSL Orioles 2 |
| 2022 | Norfolk Tides | Bowie Baysox | Aberdeen IronBirds | Delmarva Shorebirds | FCL Orioles | DSL Orioles 1 DSL Orioles 2 |
| 2021 | Norfolk Tides | Bowie Baysox | Aberdeen IronBirds | Delmarva Shorebirds | FCL Orioles | DSL Orioles 1 DSL Orioles 2 |

### 1990–2020

Minor League Baseball operated with six classes from 1990 to 2020. The Class A level was subdivided for a second time with the creation of Class A-Advanced. The Rookie level consisted of domestic and foreign circuits.
| Year | Triple-A | Double-A | Class A-Advanced | Class A | Class A Short Season | Rookie League | Foreign Rookie |
| 2020 | Norfolk Tides | Bowie Baysox | Frederick Keys | Delmarva Shorebirds | Aberdeen IronBirds | GCL Orioles | DSL Orioles 1 DSL Orioles 2 |
| 2019 | Norfolk Tides | Bowie Baysox | Frederick Keys | Delmarva Shorebirds | Aberdeen IronBirds | GCL Orioles | DSL Orioles 1 DSL Orioles 2 |
| 2018 | Norfolk Tides | Bowie Baysox | Frederick Keys | Delmarva Shorebirds | Aberdeen IronBirds | GCL Orioles | DSL Orioles |
| 2017 | Norfolk Tides | Bowie Baysox | Frederick Keys | Delmarva Shorebirds | Aberdeen IronBirds | GCL Orioles | DSL Orioles |
| 2016 | Norfolk Tides | Bowie Baysox | Frederick Keys | Delmarva Shorebirds | Aberdeen IronBirds | GCL Orioles | DSL Orioles 1 DSL Orioles 2 |
| 2015 | Norfolk Tides | Bowie Baysox | Frederick Keys | Delmarva Shorebirds | Aberdeen IronBirds | GCL Orioles | DSL Orioles 1 DSL Orioles 2 |
| 2014 | Norfolk Tides | Bowie Baysox | Frederick Keys | Delmarva Shorebirds | Aberdeen IronBirds | GCL Orioles | DSL Orioles 1 DSL Orioles 2 |
| 2013 | Norfolk Tides | Bowie Baysox | Frederick Keys | Delmarva Shorebirds | Aberdeen IronBirds | GCL Orioles | DSL Orioles 1 DSL Orioles 2 |
| 2012 | Norfolk Tides | Bowie Baysox | Frederick Keys | Delmarva Shorebirds | Aberdeen IronBirds | GCL Orioles | DSL Orioles |
| 2011 | Norfolk Tides | Bowie Baysox | Frederick Keys | Delmarva Shorebirds | Aberdeen IronBirds | GCL Orioles | DSL Orioles |
| 2010 | Norfolk Tides | Bowie Baysox | Frederick Keys | Delmarva Shorebirds | Aberdeen IronBirds | Bluefield Orioles GCL Orioles | DSL Orioles 1 DSL Orioles 2 |
| 2009 | Norfolk Tides | Bowie Baysox | Frederick Keys | Delmarva Shorebirds | Aberdeen IronBirds | Bluefield Orioles GCL Orioles | DSL Orioles |
| 2008 | Norfolk Tides | Bowie Baysox | Frederick Keys | Delmarva Shorebirds | Aberdeen IronBirds | Bluefield Orioles GCL Orioles | DSL Orioles |
| 2007 | Norfolk Tides | Bowie Baysox | Frederick Keys | Delmarva Shorebirds | Aberdeen IronBirds | Bluefield Orioles GCL Orioles | DSL Orioles |
| 2006 | Ottawa Lynx | Bowie Baysox | Frederick Keys | Delmarva Shorebirds | Aberdeen IronBirds | Bluefield Orioles | DSL Orioles VSL Orioles |
| 2005 | Ottawa Lynx | Bowie Baysox | Frederick Keys | Delmarva Shorebirds | Aberdeen IronBirds | Bluefield Orioles | DSL Orioles VSL Orioles |
| 2004 | Ottawa Lynx | Bowie Baysox | Frederick Keys | Delmarva Shorebirds | Aberdeen IronBirds | Bluefield Orioles | DSL Orioles Venoco 2 |
| 2003 | Ottawa Lynx | Bowie Baysox | Frederick Keys | Delmarva Shorebirds | Aberdeen IronBirds | Bluefield Orioles GCL Orioles | DSL Orioles Yaritagua |
| 2002 | Rochester Red Wings | Bowie Baysox | Frederick Keys | Delmarva Shorebirds | Aberdeen IronBirds | Bluefield Orioles GCL Orioles | DSL Orioles Cabudare |
| 2001 | Rochester Red Wings | Bowie Baysox | Frederick Keys | Delmarva Shorebirds | — | Bluefield Orioles GCL Orioles | DSL Orioles |
| 2000 | Rochester Red Wings | Bowie Baysox | Frederick Keys | Delmarva Shorebirds | — | Bluefield Orioles GCL Orioles | DSL Orioles |
| 1999 | Rochester Red Wings | Bowie Baysox | Frederick Keys | Delmarva Shorebirds | — | Bluefield Orioles GCL Orioles | DSL Orioles |
| 1998 | Rochester Red Wings | Bowie Baysox | Frederick Keys | Delmarva Shorebirds | — | Bluefield Orioles GCL Orioles | DSL Orioles |
| 1997 | Rochester Red Wings | Bowie Baysox | Frederick Keys | Delmarva Shorebirds | — | Bluefield Orioles GCL Orioles | DSL Orioles |
| 1996 | Rochester Red Wings | Bowie Baysox | Frederick Keys High Desert Mavericks | — | — | Bluefield Orioles GCL Orioles | DSL Orioles |
| 1995 | Rochester Red Wings | Bowie Baysox | Frederick Keys High Desert Mavericks | — | — | Bluefield Orioles GCL Orioles | — |
| 1994 | Rochester Red Wings | Bowie Baysox | Frederick Keys | Albany Polecats | — | Bluefield Orioles GCL Orioles | — |
| 1993 | Rochester Red Wings | Bowie Baysox | Frederick Keys | Albany Polecats | — | Bluefield Orioles GCL Orioles | — |
| 1992 | Rochester Red Wings | Hagerstown Suns | Frederick Keys | Kane County Cougars | — | Bluefield Orioles GCL Orioles | — |
| 1991 | Rochester Red Wings | Hagerstown Suns | Frederick Keys | Kane County Cougars | — | Bluefield Orioles GCL Orioles | — |
| 1990 | Rochester Red Wings | Hagerstown Suns | Frederick Keys | Wausau Timbers | — | Bluefield Orioles | — |

### 1963–1989

The foundation of the minors' current structure was the result of a reorganization initiated by Major League Baseball (MLB) before the 1963 season. The reduction from six classes to four (Triple-A, Double-AA, Class A and Rookie) was a response to the general decline of the minors throughout the 1950s and early-1960s when leagues and teams folded due to shrinking attendance caused by baseball fans' preference for staying at home to watch MLB games on television. The only change made within the next 27 years was Class A being subdivided for the first time to form Class A Short Season in 1966.
(The Orioles were involved in minor league affiliate co-op agreements twice—the Pulaski Phillies with various other MLB clubs in 1976 and the Daytona Beach Islanders with the Texas Rangers in 1985.)
| Year | Triple-A | Double-A | Class A | Class A Short Season | Rookie League |
| 1989 | Rochester Red Wings | Hagerstown Suns | Frederick Keys | Erie Orioles | Bluefield Orioles |
| 1988 | Rochester Red Wings | Charlotte Knights | Hagerstown Suns | Erie Orioles | Bluefield Orioles |
| 1987 | Rochester Red Wings | Charlotte Orioles | Hagerstown Suns | Newark Orioles | Bluefield Orioles |
| 1986 | Rochester Red Wings | Charlotte Orioles | Hagerstown Suns | Newark Orioles | Bluefield Orioles |
| 1985 | Rochester Red Wings | Charlotte Orioles | Hagerstown Suns, Daytona Beach Islanders | Newark Orioles | Bluefield Orioles |
| 1984 | Rochester Red Wings | Charlotte Orioles | Hagerstown Suns | Newark Orioles | Bluefield Orioles |
| 1983 | Rochester Red Wings | Charlotte Orioles | Hagerstown Suns, San Jose Bees | Newark Orioles | Bluefield Orioles |
| 1982 | Rochester Red Wings | Charlotte Orioles | Hagerstown Suns | — | Bluefield Orioles |
| 1981 | Rochester Red Wings | Charlotte Orioles | Miami Orioles | — | Bluefield Orioles |
| 1980 | Rochester Red Wings | Charlotte Orioles | Miami Orioles | — | Bluefield Orioles |
| 1979 | Rochester Red Wings | Charlotte Orioles | Miami Orioles | — | Bluefield Orioles |
| 1978 | Rochester Red Wings | Charlotte Orioles | Miami Orioles | — | Bluefield Orioles |
| 1977 | Rochester Red Wings | Charlotte Orioles | Miami Orioles | — | Bluefield Orioles |
| 1976 | Rochester Red Wings | Charlotte Orioles | Miami Orioles | — | Bluefield Orioles Pulaski Phillies |
| 1975 | Rochester Red Wings | Asheville Orioles | Miami Orioles, Lodi Orioles | — | Bluefield Orioles |
| 1974 | Rochester Red Wings | Asheville Orioles | Miami Orioles, Lodi Orioles | — | Bluefield Orioles |
| 1973 | Rochester Red Wings | Asheville Orioles | Miami Orioles, Lodi Lions | — | Bluefield Orioles |
| 1972 | Rochester Red Wings | Asheville Orioles | Miami Orioles, Lodi Orions | Lewiston Broncs | Bluefield Orioles |
| 1971 | Rochester Red Wings | Dallas-Fort Worth Spurs | Miami Orioles, Stockton Ports | Aberdeen Pheasants | Bluefield Orioles |
| 1970 | Rochester Red Wings | Dallas-Fort Worth Spurs | Miami Marlins, Stockton Ports | Aberdeen Pheasants | Bluefield Orioles |
| 1969 | Rochester Red Wings | Dallas-Fort Worth Spurs | Miami Marlins, Stockton Ports | Aberdeen Pheasants | Bluefield Orioles |
| 1968 | Rochester Red Wings | Elmira Pioneers | Miami Marlins, Stockton Ports | Aberdeen Pheasants | Bluefield Orioles |
| 1967 | Rochester Red Wings | Elmira Pioneers | Miami Marlins, Stockton Ports | Aberdeen Pheasants | Bluefield Orioles |
| 1966 | Rochester Red Wings | Elmira Pioneers | Miami Marlins, Stockton Ports | Aberdeen Pheasants | Bluefield Orioles |
| 1965 | Rochester Red Wings | Elmira Pioneers | Tri-City Atoms, Stockton Ports, Fox Cities Foxes, Aberdeen Pheasants | — | Bluefield Orioles |
| 1964 | Rochester Red Wings | Elmira Pioneers | Stockton Ports, Fox Cities Foxes, Aberdeen Pheasants | — | Bluefield Orioles |
| 1963 | Rochester Red Wings | Elmira Pioneers | Stockton Ports, Fox Cities Foxes, Aberdeen Pheasants | — | Bluefield Orioles |

### 1954–1962

The minors operated with six levels (Triple-A, Double-A and Classes A, B, C and D) from 1946 to 1962. The Pacific Coast League (PCL) was reclassified from Triple-A to Open in 1952 due to the possibility of becoming a third major league. This arrangement ended following the 1957 season when the relocation of the National League's Dodgers and Giants to the West Coast killed any chance of the PCL being promoted. The 1963 reorganization resulted in the Eastern and South Atlantic Leagues being elevated from Class A to Double-A, five of seven Class D circuits plus the ones in B and C upgraded to A, and the Appalachian League reclassified from D to Rookie.
| Year | Triple-A | Double-A | Class A | Class B | Class C | Class D |
| 1962 | Rochester Red Wings | — | Elmira Pioneers | — | Stockton Ports Aberdeen Pheasants | Bluefield Orioles Fox Cities Foxes |
| 1961 | Rochester Red Wings | Little Rock Travelers Victoria/Ardmore Rosebuds | — | Fox Cities Foxes Tri-Cities Braves | Stockton Ports Aberdeen Pheasants | Bluefield Orioles Leesburg Orioles |
| 1960 | Vancouver Mounties Miami Marlins | — | — | Fox Cities Foxes | Stockton Ports Aberdeen Pheasants | Bluefield Orioles Leesburg Orioles |
| 1959 | Vancouver Mounties Miami Marlins | Amarillo Gold Sox | — | — | Stockton Ports Aberdeen Pheasants | Bluefield Orioles Pensacola Dons |
| 1958 | Vancouver Mounties Louisville Colonels | — | Knoxville Smokies | Wilson Tobs | Aberdeen Pheasants | Bluefield Orioles Pensacola Dons Fitzgerald Orioles |
| 1957 | Vancouver Mounties (Open) | San Antonio Missions | Knoxville Smokies | — | Aberdeen Pheasants Phoenix Stars | Paris Orioles Thomson Orioles Fitzgerald Orioles |
| 1956 | Vancouver Mounties (Open) | San Antonio Missions | Columbus Foxes | York White Roses Lubbock Hubbers/ Texas City Texans | Aberdeen Pheasants Thetford Mines Miners Phoenix Stars | Paris Orioles Thomson Orioles |
| 1955 | — | San Antonio Missions | Wichita Indians | York White Roses Fayetteville Highlanders | Aberdeen Pheasants Thetford Mines Miners | Paris Orioles Cordele Orioles |
| 1954 | — | San Antonio Missions | Wichita Indians Lewiston Broncs | York White Roses Anderson Rebels | Aberdeen Pheasants Thetford Mines Miners Pine Bluff Judges | Americus-Cordele Orioles Wytheville Statesmen Marion Marauders Ada Herefords/Cementers |

## St. Louis Browns

| Year | Triple-A | Double-A | Class A | Class B | Class C | Class D |
| 1953 | — | San Antonio Missions | Wichita Indians Lewiston Broncs | York White Roses Anderson Rebels | Aberdeen Pheasants Pine Bluff Judges Thetford Mines Miners Pocatello Bannocks | Ada Herefords Wytheville Statesmen Valdosta Browns |
| 1952 | Toronto Maple Leafs | San Antonio Missions | Scranton Miners | York White Roses Anderson Rebels | Aberdeen Pheasants Stockton Ports Pine Bluff Judges Pocatello Bannocks | Ada Herefords Independence Browns Wellsville Rockets |
| 1951 | Toronto Maple Leafs | San Antonio Missions | — | Anderson Rebels | Aberdeen Pheasants Pine Bluff Judges | Ada Herefords Pittsburg Browns Redding Browns Appleton Papermakers |
| 1950 | Baltimore Orioles | San Antonio Missions | Wichita Indians | Wichita Falls Spudders | Aberdeen Pheasants Pine Bluff Judges Marshall Browns | Ada Herefords Pittsburg Browns Redding Browns Appleton Papermakers |
| 1949 | Baltimore Orioles | San Antonio Missions | Elmira Pioneers | Springfield Browns Wichita Falls Spudders | Aberdeen Pheasants Pine Bluff Cardinals Gloversville-Johnstown Glovers Globe-Miami Browns Muskogee Reds Marshall Browns Salinas Colts/Potros de Tijuana | Mayfield Clothiers Ada Herefords Pittsburg Browns Redding Browns Wausau Lumberjacks Olean Oilers |
| 1948 | Toledo Mud Hens | San Antonio Missions | Elmira Pioneers | Springfield Browns Wichita Falls Spudders Port Chester Clippers | Aberdeen Pheasants Gloversville-Johnstown Glovers Globe-Miami Browns Muskogee Reds Hannibal Pilots Modesto Reds | Mayfield Clothiers Ada Herefords Pittsburg Browns Redding Browns Wausau Lumberjacks Belleville Stags Griffin Pimientos Peekskill Highlanders |
| 1947 | Toledo Mud Hens | San Antonio Missions | Elmira Pioneers | Springfield Browns | Aberdeen Pheasants Gloversville-Johnstown Glovers Globe-Miami Browns Muskogee Reds Hannibal Pilots | Mayfield Clothiers Ada Herefords Pittsburg Browns Newark Moundsmen Wausau Lumberjacks Belleville Stags Baton Rouge Red Sticks |
| 1946 | Toledo Mud Hens | San Antonio Missions | Elmira Pioneers | Springfield Browns Spartanburg Peaches | Aberdeen Pheasants Gloversville-Johnstown Glovers Paris Red Peppers | Mayfield Clothiers Pittsburg Browns Newark Moundsmen |
| 1945 | — | Toledo Mud Hens | Elmira Pioneers | — | — | Newark Moundsmen |
| 1944 | — | Toledo Mud Hens | Memphis Chickasaws | — | — | Newark Moundsmen |
| 1943 | — | Toledo Mud Hens | — | — | — | — |
| 1942 | — | Toledo Mud Hens | San Antonio Missions | Springfield Browns | Gloversville-Johnstown Glovers Huntington Jewels | Dothan Browns |
| 1941 | — | Toledo Mud Hens | San Antonio Missions | Springfield Browns Meridian Eagles | Youngstown Browns St. Joseph Ponies/Carthage Browns | Mayfield Browns Lafayette White Sox Paragould Browns Pueblo Rollers |
| 1940 | — | Toledo Mud Hens | San Antonio Missions | Springfield Browns | Palestine Pals Youngstown Browns Topeka Owls Tyler Trojans | Mayfield Browns Lafayette White Sox Paragould Browns Pennington Gap Miners |
| 1939 | — | — | San Antonio Missions | Springfield Browns | Youngstown Browns Topeka Owls | Mayfield Browns Lafayette White Sox Paragould Browns Pennington Gap Miners Lincoln Links Beaver Falls Bees Fayetteville Angels |
| 1938 | — | — | San Antonio Missions | Springfield Browns Meridian Scrappers | Palestine Pals Johnstown Johnnies | Mayfield Clothiers Lafayette White Sox Findlay Browns Easton Cubs Lincoln Links Batesville White Sox |
| 1937 | — | — | San Antonio Missions Des Moines Demons | Meridian Scrappers Terre Haute Tots | Palestine Pals Johnstown Johnnies | Mayfield Clothiers Lafayette White Sox Findlay Browns Easton Browns Fairbury Jeffs Osceola Indians Superior Blues |
| 1936 | — | — | San Antonio Missions | — | Palestine Pals | Lafayette White Sox |
| 1935 | — | — | San Antonio Missions | — | Palestine Pals | — |
| 1934 | — | — | San Antonio Missions | — | — | — |
| 1933 | — | — | San Antonio Missions Joplin Miners | — | — | — |
| 1932 | — | — | Wichita Falls Spudders/ Longview Cannibals | — | Fort Smith Twins/ Muskogee Chiefs | Rock Island Islanders |
| 1931 | — | — | Wichita Falls Spudders | — | — | — |
| 1930 | — | — | Wichita Falls Spudders | — | — | — |
| 1929 | — | — | Wichita Falls Spudders | — | — | — |
| 1928 | — | — | Wichita Falls Spudders | — | — | — |