- UMAC Baseball
- Cal Ripken/Babe Ruth organization serving upper Montgomery County, Maryland.
- BCC Baseball
- Serving Bethseda and Chevy Chase
- Burtonsville Athletic Association
- Serving Burtonsville, MD
- Clarksburg Baseball
- Serving Clarksburg and surrounding areas
- Damascus Baseball
- Serving Damascus and surrounding areas.
- Gaithersburg Sports Association
- Serving Gaithersburg and surrounding areas.
- Germantown Athletic Club
- Serving Germantown and surrounding areas.
- Montgomery County Baseball Association
- Serving Bethesda, Burtonsville, Damascus, Gaithersburg, Germantown, Onley, Rockville.
- Montgomery Village Sports Association
- Serving Montgomery Village and surrounding areas.
