| Aberdeen Grays |
Aberdeen, Washington |
Northwestern League |
professional |
defunct |
| Alameda Grays |
San Francisco, California |
California League |
professional |
defunct |
| Arkansas City Grays |
Arkansas City, Kansas |
Kansas State League |
professional |
defunct |
| Bartlesville Grays |
Bartlesville, Oklahoma |
Southwestern League |
professional |
defunct |
| Berrien Springs Grays |
Berrien Springs, Michigan |
Indiana-Michigan League |
professional |
defunct |
| Birmingham Grays |
Birmingham, Alabama |
Southern League |
professional |
defunct |
| Brandon Grays |
Brandon, Manitoba |
Northern League |
professional |
defunct |
| Brooklyn Grays |
Brooklyn, New York |
American Association |
professional |
defunct |
| Brooklyn Grays |
Brooklyn, New York |
Eastern League |
professional |
defunct |
| Clarksville Grays |
Clarksville, Tennessee |
Kentucky-Illinois-Tennessee League |
professional |
defunct |
| D.C. Grays |
Washington, D.C. |
Cal Ripken Sr. Collegiate Baseball League |
amateur |
active |
| DC Grays |
Alexandria, Virginia |
Clark C. Griffith Collegiate League |
amateur |
defunct |
| Edmonton Grays |
Edmonton, Alberta |
Western Canada League |
professional |
defunct |
| FCA Grays |
Kansas City, Missouri |
M.I.N.K. Baseball League |
amateur |
defunct |
| Gray's Harbor Grays |
Aberdeen, Washington |
Northwestern League |
professional |
defunct |
| Greeley Grays |
Greeley, Colorado |
Colorado Collegiate Baseball League |
amateur |
active |
| Greeley Grays |
Greeley, Colorado |
Mountain Collegiate Baseball League |
amateur |
defunct |
| Greenville Grays |
Greenville, Mississippi |
Cotton States League |
professional |
defunct |
| Homestead Grays |
Pittsburgh, Pennsylvania |
East-West League |
professional |
defunct |
| Homestead Grays |
Pittsburgh, Pennsylvania |
American Negro League |
professional |
defunct |
| Iola Grays |
Iola, Kansas |
Kansas State League |
professional |
defunct |
| Louisville Grays |
Louisville, Kentucky |
Major League Baseball |
professional |
defunct |
| Lowell Grays |
Lowell, Massachusetts |
Eastern League |
professional |
defunct |
| Lowell Grays |
Lowell, Massachusetts |
New England League |
professional |
defunct |
| Lynchburg Grays |
Lynchburg, Virginia |
Virginia League |
professional |
defunct |
| Marshalltown Grays |
Marshalltown, Iowa |
Iowa State League |
professional |
defunct |
| Memphis Grays |
Memphis, Tennessee |
Southern League |
professional |
defunct |
| Milwaukee Grays |
Milwaukee, Wisconsin |
Major League Baseball |
professional |
defunct |
| Montgomery Grays |
Montgomery, Alabama |
South Atlantic League |
professional |
defunct |
| Montgomery Grays |
Montgomery, Alabama |
Southern League |
professional |
defunct |
| Oswego Grays |
Oswego, New York |
New York State League |
professional |
defunct |
| Paris Grays |
Paris, Texas |
East Texas League |
professional |
defunct |
| Peninsula Grays |
Norfolk, Virginia |
Carolina League |
professional |
defunct |
| Providence Grays |
Providence, Rhode Island |
Eastern League |
professional |
defunct |
| Providence Grays |
Providence, Rhode Island |
New England League |
professional |
defunct |
| Providence Grays |
Providence, Rhode Island |
International League |
professional |
defunct |
| Providence Grays |
Providence, Rhode Island |
Major League Baseball |
professional |
defunct |
| Richmond Grays |
Richmond, Virginia |
Virginia-North Carolina League |
professional |
defunct |
| San Bernardino Grays |
San Bernardino, California |
Southern California League |
professional |
defunct |
| Shelbyville Grays |
Shelbyville, Kentucky |
Blue Grass League |
professional |
defunct |
| Shreveport Grays |
Shreveport, Louisiana |
Texas-Southern League |
professional |
defunct |
| The Grays |
|
Canadian American Association of Professional Baseball |
professional |
defunct |
| Williamsport Grays |
Williamsport, Pennsylvania |
New York-Penn League |
professional |
defunct |
| Williamsport Grays |
Williamsport, Pennsylvania |
Eastern League |
professional |
defunct |
| Worcester Grays |
Worcester, Massachusetts |
New England League |
professional |
defunct |
| Zanesville Grays |
Zanesville, Ohio |
Middle Atlantic League |
professional |
defunct |