- Location: Fresno, CA
- League: Pacific Coast League 1998-2019; Low-A West 2021-present
- Affiliation: San Francisco Giants 1998-2014; Houston Astros 2015-2018; Washington Nationals 2019; Colorado Rockies 2021-present
- Ballpark: Pete Beiden Field 1998-2001; Chukchansi Park 2002-present
The Fresno Grizzlies were the Pacific Coast League affiliate of the San Francisco Giants for almost two decades, but had difficulty finding affiliates after that. They were the last Triple-A team signed for the 2019-20 affiliation cycle, hooking up with the Washington Nationals who had lost the game of musical chairs. Major League Baseball later dropped them three levels in order to get Lancaster out of the California League. They are thus now part of the Low-A West.
The Grizz won the 2015 Triple-A National Baseball Championship, and their three different parent teams in the 2010s won five World Series crowns between them. Also in 2015, they played the "Taco Truck Throwdown" as the Fresno Tacos to a house record of 16,916 spectators. Taco Bell promptly tweeted an offer to buy "tacos for all of Fresno" if they made the promotion permanent. They didn't, but both the tweet and the promotion went viral. They now often play as the Fresno Tacos – and the Throwdown evolved into a stand-alone event held at the stadium when the team is away. The Grizz play Copa de la Diversion Hispanic engagement campaign games as Lowriders de Fresno.
The Expansion of 1998 put Pacific Coast League baseball in Fresno for the first time since 1906, but there's a wrinkle in determining who moved there. Technically, the Phoenix Firebirds made that move, but those Firebirds had undergone a change the previous off-season. The owners of the Firebirds and the Tucson Toros swapped their franchises, so the Firebirds who moved to Fresno in 1998 had been the 1997 Toros.
- Chris Landers: "Let the Fresno Grizzlies take you back in time with their spectacular Kris Kross uniforms", "Cut 4", mlb.com, April 21, 2017.