|No. of teams||10|
The Triple-A West is a 10-team Minor League Baseball league that began operating in the United States in 2021. Along with the Triple-A East, it is one of two leagues playing at the Triple-A level, which is one grade below Major League Baseball (MLB). The league was created in 2021 in conjunction with MLB's reorganization of the minor leagues. The league is made up of nine teams formerly of the Pacific Coast League and one from the independent Atlantic League of Professional Baseball.
|Division||Team||Founded||MLB Affiliation||Affiliated Since||City||Stadium||Capacity|
|East||Albuquerque Isotopes||2003||Colorado Rockies||2015||Albuquerque, New Mexico||Rio Grande Credit Union Field at Isotopes Park||13,500|
|El Paso Chihuahuas||2014||San Diego Padres||2014||El Paso, Texas||Southwest University Park||9,500|
|Oklahoma City Dodgers||1962||Los Angeles Dodgers||2015||Oklahoma City, Oklahoma||Chickasaw Bricktown Ballpark||9,000|
|Round Rock Express||2000||Texas Rangers||2021||Round Rock, Texas||Dell Diamond||11,631|
|Sugar Land Skeeters||2012||Houston Astros||2021||Sugar Land, Texas||Constellation Field||7,500|
|West||Las Vegas Aviators||1983||Oakland Athletics||2019||Summerlin, Nevada||Las Vegas Ballpark||10,000|
|Reno Aces||2009||Arizona Diamondbacks||2009||Reno, Nevada||Greater Nevada Field||9,013|
|Sacramento River Cats||2000||San Francisco Giants||2015||West Sacramento, California||Sutter Health Park||14,014|
|Salt Lake Bees||1994||Los Angeles Angels||2001||Salt Lake City, Utah||Smith's Ballpark||14,511|
|Tacoma Rainiers||1960||Seattle Mariners||1995||Tacoma, Washington||Cheney Stadium||6,500|
Nine current league teams were placed in the Triple-A West from the Pacific Coast League.
One current league team was placed in the Triple-A West from the independent Atlantic League of Professional Baseball.