Little League World Series (Mid-Atlantic Region)
The Mid-Atlantic Region is one of eight United States regions that currently sends teams to the Little League World Series, the largest youth baseball tournament in the world. The Mid-Atlantic Region's participation in the LLWS dates back to 1957, when it was known as the East Region. However, when the LLWS doubled in size from 8 to 16 teams in 2001, with the number of US teams expanding from 4 to 8, the East Region was split into the New England and Mid-Atlantic Regions.
The Mid-Atlantic Region consists of Washington, D.C. and five Mid-Atlantic states:
Two other states, Virginia and West Virginia, are included in some definitions of the Mid-Atlantic region, but for purposes of the Little League World Series are included in the Southeast region.
Regional championship
Winner is indicated in green.| Year | Delaware | Maryland | New Jersey | New York | Pennsylvania | Washington, D.C. |
| ' | Midway LL Wilmington | Easton LL Easton | Randolph West LL Randolph | Rolando Paulino LL Bronx | State College American LL State College | Capitol City LL |
| ' | Lower Sussex LL Frankford | South Caroline LL Preston | Nottingham LL Hamilton Square | Harlem LL Manhattan | Lehigh LL Bethlehem | Capitol City LL |
| Naamans LL Wilmington | West Salisbury LL Salisbury | Freehold Township American LL Freehold | Ramapo LL Ramapo | Lower Perkiomen LL Collegeville | Capitol City LL | |
| 2004 | Capitol LL Wilmington | South Caroline LL Preston | HTRBA LL Hamilton | Colonie LL Colonie | Deep Run Valley LL Hilltown | Capitol City LL |
| 2005 | Canal LL Bear | Thurmont LL Thurmont | Toms River American LL Toms River | Merrick-North Merrick LL Merrick | Council Rock Newtown LL Newtown | No tournament |
| 2006 | Naamans LL Wilmington | South Caroline LL Preston | Livingston American LL Livingston | Mid-Island LL Staten Island | Butler Township LL Butler Township | Capitol City LL |
| 2007 | M.O.T. LL Middletown | West Salisbury LL Salisbury | Randolph East LL Randolph | Maine-Endwell LL Endwell | Council Rock Northampton LL Northampton Township | Capitol City LL |
| 2008 | M.O.T. LL Middletown | Hagerstown Federal LL Hagerstown | Bordentown LL Bordentown | Haverstraw LL Haverstraw | Devon Strafford LL Devon | Capitol City LL |
| 2009 | M.O.T. LL Middletown | Conococheague LL Williamsport | Somerset Hills LL Bernardsville | South Shore National LL Staten Island | Moon Township LL Moon Township | Northwest Washington LL |
| 2010 | Brandywine LL Wilmington | Railroaders LL Brunswick | Toms River National LL Toms River | Stony Point LL Stony Point | Council Rock Newtown LL Newtown | Capitol City LL |
| 2011 | Newark National LL Newark | Conocoheague LL Williamsport | Paramus LL Paramus | Great Kills American LL Staten Island | Keystone LL Beech Creek | Northwest Washington LL |
| 2012 | Newark National LL Newark | West Salisbury LL Salisbury | Par-Troy East LL Parsippany | Stony Point LL Stony Point | Collier Township Athletic Association Collier | Northwest Washington LL |
| 2013 | Newark National LL Newark | Berlin LL Berlin | East Greenwich LL Clarksboro | Burnt Hills-Ballston Lake LL Burnt Hills | Lionville LL Lionville | Capitol City LL |
| 2014 | Newark National LL Newark | West Salisbury LL Salisbury | Toms River LL Toms River | Colonie LL Colonie | Taney Youth Baseball Association LL Philadelphia | Northwest Washington LL |
| 2015 | M.O.T. LL Middletown | Delmar LL Delmar | Jackson Township LL Jackson | Maine-Endwell LL Maine-Endwell | Red Land LL Lewisberry | Capitol City LL |
| 2016 | Milton LL Milton | Hughesville LL Hughesville | Freehold Township LL Freehold | Maine-Endwell LL Maine-Endwell | Keystone LL Clinton County | Capitol City LL |
| 2017 | Milton LL Milton | Thurmont LL Thurmont | Holbrook LL Jackson | Plainview LL Plainview | Upper Providence LL Oaks | Northwest Washington LL |
| 2018 | Milton LL Milton | Berlin LL Berlin | Middletown LL Middletown | Mid-Island LL Staten Island | Keystone LL Clinton County | Mamie Johnson LL |
| 2019 | Newark National LL Newark | Fruitland LL Fruitland | Elmora Youth LL Elizabeth | Haverstraw LL Haverstraw | East Pennsboro Youth Athletic LL Enola | Northwest Washington LL |
LLWS results
As of the 2019 Little League World Series.| Year | Champion | City | LLWS | Record |
| Rolando Paulino LL |  Bronx | DQ | DQ | |
| Harlem LL | Manhattan | U.S. semifinal | 2–2 | |
| Naamans LL |  Wilmington | Group stage | 1–2 | |
| South Caroline LL |  Preston | U.S. semifinal | 1–3 | |
| Council Rock LL |  Newtown | Group stage | 1–2 | |
| Mid-Island LL | Staten Island | Group stage | 0–3 | |
| West Salisbury LL | Salisbury | Group stage | 0–2 | |
| Hagerstown Federal LL | Hagerstown | Group stage | 2–1 | |
| South Shore LL | Staten Island | U.S. semifinal | 2–2 | |
| Toms River National LL |  Toms River | Group stage | 1–2 | |
| Keystone LL | Beech Creek | U.S. semifinal | 3–2 | |
| Par-Troy East LL | Parsippany | Round 2 | 1–2 | |
| Newark National LL | Newark | Round 2 | 1–2 | |
| Taney Youth Baseball Association LL | Philadelphia | U.S. Semifinal | 2–2 | |
| Red Land LL | Lewisberry | Runner-up | 4–1 | |
| Maine-Endwell LL | Maine-Endwell | Champions | 5–0 | |
| Holbrook LL | Jackson | Round 3 | 2–2 | |
| Mid-Island LL | Staten Island | U.S. semifinal | 2–2 | |
| Elmora Youth LL | Elizabeth | Round 3 | 2–2 |
Results by state
As of the 2018 Little League World Series.| State | Mid-Atlantic Championships | Record in LLWS | PCT |
| Pennsylvania | 4 | 10–7 | |
| New York | 6 | 11–9 | |
| New Jersey | 4 | 6–8 | .429 |
| Maryland | 3 | 3–6 | |
| Delaware | 2 | 2–4 | |
 Washington D.C. | 0 | 0–0 | - |
| Total | 18 | 32–34 |