Little League World Series (West Region)
The West Region is one of eight United States regions that currently send teams to the Little League World Series, the largest youth baseball competition in the world. The region's participation in the LLWS dates back to 1957, when it was known as the West Region. However, when the LLWS was expanded in 2001 from eight teams to 16 teams, the former West Region was split into the Northwest Region and a new West Region. The West Region headquarters is in San Bernardino, California.
The West Region is made up of six districts in five states.
Regional championship
The list below lists each state's participant in the Little League West Region Tournament. That year's winner is indicated in green. The 2008 Waipahu, 2009 Chula Vista, and 2011 Ocean View teams went on to win the World Series.2001
2002–2005
In 2002, some Little League regions were realigned. This resulted in Wyoming joining the West Region, Hawaii moving to the Northwest Region, and New Mexico becoming part of the Southwest Region.| Year | Arizona | Northern California | Southern California | Nevada | Utah | Wyoming |
| ' | Arrowhead LL Glendale | Aptos LL Aptos | West Anaheim LL Anaheim | Peccole LL Las Vegas | Taylorsville LL Taylorsville | Laramie LL Laramie |
| ' | Chandler National LL Chandler | Lakeside LL Granite Bay/Loomis | Vineyard LL Rancho Cucamonga | Green Valley LL Henderson | No representative | Laramie LL Laramie |
| 2004 | Deer Valley LL Glendale | Visalia National LL Visalia | Conejo Valley East LL Thousand Oaks | Green Valley LL Henderson | Taylorsville LL Salt Lake City | Gillette LL Gillette |
| 2005 | Chandler National LL Chandler | Tracy National LL Tracy | Rancho Buena Vista LL Vista | Peccole LL Las Vegas | Snow Canyon LL Santa Clara | Gillette LL Gillette |
- Before the start of the regional tournament, Utah's state champions were disqualified for participating in a non-sanctioned tournament prior to the start of the state tournament. The state's runner-up, who had lost the championship game by forfeit, were awarded the title. However, they would also be disqualified later for the same reason. Little League officials, after failing to find another replacement team on such short notice, decided the regional tournament would have to take place without a team from Utah.
2006–present
| Year | Arizona | Northern California | Southern California | Hawaii | Nevada | Utah |
| 2006 | Ahwatukee American LL Phoenix | River Park LL Fresno | Northridge City LL Northridge | Waipio LL Waipahu | Lone Mountain LL Las Vegas | Snow Canyon LL Santa Clara |
| 2007 | Chandler National LL Chandler | Moreland LL San Jose | Solana Beach LL Solana Beach | Waipio LL Waipahu | Green Valley LL Las Vegas | Snow Canyon LL Santa Clara |
| 2008 | Arrowhead LL Glendale | Pleasanton American LL Pleasanton | Aliso Viejo LL Aliso Viejo | Waipio LL Waipahu | Paseo Verde LL Henderson | Cedar City LL Cedar City |
| 2009 | Arrowhead LL Glendale | Loomis-Eureka LL Granite Bay | Park View LL Chula Vista | Central East Maui LL Wailuku | Legacy LL Las Vegas | Cedar City American LL Cedar City |
| 2010 | North Scottsdale LL Scottsdale | Napa National LL Napa | Ocean View LL Huntington Beach | Waipio LL Waipahu | Mountain Ridge LL Las Vegas | Washington LL Washington |
| 2011 | Rio Rico LL Rio Rico | Red Bluff LL Red Bluff | Ocean View LL Huntington Beach | Central East Maui LL Wailuku | Silverado LL Las Vegas | Washington LL Washington |
| 2012 | Rincon LL Tucson | Petaluma National LL Petaluma | Orange LL Orange | Nānākuli-Maili LL Nānākuli | Cheyenne LL North Las Vegas | Cedar National LL Cedar City |
| 2013 | Chandler National South LL Chandler | Belmont-Redwood Shores LL Belmont-Redwood Shores | Eastlake LL Chula Vista | Central East Maui LL Wailuku | Mountain Ridge LL Las Vegas | Dixie LL St. George |
| 2014 | Chandler National North LL Chandler | Pacifica American LL Pacifica | Encinitas LL Encinitas | Honolulu LL Honolulu | Mountain Ridge LL Las Vegas | Dixie LL St. George |
| 2015 | Chandler National North LL Chandler | Cambrian Park LL San Jose | Sweetwater LL Bonita | Waipio LL Waipahu | Paseo Verde LL Henderson | Snow Canyon LL Santa Clara |
| 2016 | Cactus Foothills South LL Phoenix | Vacaville Central LL Vacaville | Park View LL Chula Vista | Central East Maui LL Wailuku | Mountain Ridge LL Las Vegas | Snow Canyon LL Santa Clara |
| 2017 | Chandler National North LL Chandler | Canyon Creek LL San Ramon | Santa Margarita National Rancho Santa Margarita | Hilo LL Hilo | Summerlin South LL Las Vegas | Dixie LL St. George |
| 2018 | Sunnyside LL Tucson | Tri-City LL Rocklin | Park View LL Chula Vista | Honolulu LL Honolulu | Silverado West LL Las Vegas | Dixie LL St. George |
| 2019 | Sunnyside LL Tucson | Maidu LL Roseville | Sweetwater Valley LL Bonita | Central East Maui LL Wailuku | Paseo Verde LL Henderson | Washington LL Washington |
LLWS results
As of the 2019 Little League World Series.| Year | Champion | City | LLWS | Record |
| Oceanside American LL |  Oceanside | U.S. semifinal | 3–1 | |
| Aptos LL | Aptos | Group stage | 1–2 | |
| National LL |  Chandler | U.S. semifinal | 3–1 | |
| Conejo Valley LL | Thousand Oaks | Runner-up | 5–1 | |
| Rancho Buena Vista LL | Vista | 3rd place | 5–1 | |
| Ahwatukee American LL | Phoenix | Group stage | 2–1 | |
| National LL | Chandler | U.S. semifinal | 2–2 | |
| Waipio LL |  Waipio | Champions | 6–0 | |
| Park View LL | Chula Vista | Champions | 5–1 | |
| Waipio LL | Waipahu | Runner-up | 4–2 | |
| Ocean View LL | Huntington Beach | Champions | 5–1 | |
| Petaluma National LL | Petaluma | 3rd place | 5–2 | |
| Eastlake LL | Chula Vista | Runner-up | 4–1 | |
| Mountain Ridge LL |  Las Vegas | Runner-up | 3–2 | |
| Sweetwater Valley LL | Bonita | U.S. semifinal | 3–2 | |
| Park View LL | Chula Vista | Round 2 | 1–2 | |
| Santa Margarita National LL | Rancho Santa Margarita | Round 2 | 1–2 | |
| Honolulu LL | Honolulu | Champions | 5–0 | |
| Central East Maui LL | Wailuku | 4th place | 3–2 |
Mountain Ridge Little League of Las Vegas, Nevada was retroactively given the U.S. title when Jackie Robinson West Little League from Chicago, Illinois was found to have fielded ineligible players.
Results by state
As of the 2019 Little League World Series.| State | West Championships | Record in LLWS | PCT |
| Southern California | 9 | 32–11 | |
| Hawaii | 4 | 18–4 | |
| Arizona | 3 | 7–4 | |
| Northern California | 2 | 6–4 | |
| Nevada | 1 | 3–2 | |
 Utah | 0 | 0–0 | – |
| Total | 19 | 66–26 |