The Yuba-Sutter Gold Sox were a summer collegiate wood-bat baseball club based in Marysville, California, in the United States, that began as an independent professional team in 1995.

The City of Marysville stepped in to operate the team for the 2002 season in order to keep baseball alive in the area and the city-owned ballpark in use.

Upon conclusion of that 2002 season the Western Baseball League disbanded, thus ending the Gold Sox as a professional team.

In 2005, the Gold Sox became the host team for the Horizon Air Summer Series, a collegiate wood bat league created by Bob Bavasi.

Upon McCullough's death, Peter Bavasi, former General Manager of the San Diego Padres, President of the Toronto Blue Jays and Cleveland Indians, came out of retirement to help administer the club for the 2005 and 2006 seasons.

On January 1, 2007, Bob Bavasi invited Fair Oaks attorney Tom Lininger and his wife Karyn to join in the ownership of the club as majority shareholders.

On October 4, 2018, the Gold Sox announced that they are considering options for 2019 and beyond as a result of the Great West League suspending operations.

On September 7, 2022, the Gold Sox announced that they will not be taking to the field in 2023 and will reevaluate their position in summer collegiate baseball in the region.

Since their inception, the Gold Sox have played their home games at what was originally known as Bryant Field, located along Highway 70 in the east part of Marysville.