Jon Thomas Chargois (/ʃɑːrˈɡwɑː/ shar-GWAH;[1] born December 3, 1990) is an American professional baseball pitcher in the Texas Rangers organization.

[7] In 2012, his junior year, he had a 4–1 win–loss record with a 2.15 earned run average (ERA) in 37+2⁄3 relief innings pitched along with batting .323 in 51 games, being named to the first-team All-Conference USA.

[9] Converted to a full-time pitcher, he appeared in 12 games in the summer of 2012 for the Elizabethton Twins of the Rookie-level Appalachian League, pitching to a 1.69 ERA, and recording five saves in 16 innings.

[15] He began the 2016 season in Chattanooga,[5] and after compiling a 1.54 ERA through 11+2⁄3 innings,[16] received a promotion to the Rochester Red Wings of the Triple–A International League in May.

He was placed on the injured list with nerve irritation on August 21,[6] returning to pitch in the team's final regular season game.

[32] On January 9, 2020, Chargois signed with the Tohoku Rakuten Golden Eagles of the Nippon Professional Baseball (NPB).

[34] On February 9, 2021, Chargois signed a minor league contract with the Seattle Mariners that included a spring training invitation.

[31] On July 29, 2021, the Mariners traded Chargois and minor league infielder Austin Shenton to the Tampa Bay Rays for reliever Diego Castillo.

[39] Chargois made 25 appearances for the Rays to close out the year, registering a 5–1 record and 1.90 ERA with 24 strikeouts in 23+2⁄3 innings pitched.

[31] He made his postseason debut, pitching in all four games in the Rays' American League Division Series loss to the Red Sox.

[31] On November 15, 2022, Chargois was traded to the Miami Marlins along with Xavier Edwards for pitching prospects Marcus Johnson and Santiago Suarez.

Another oblique strain kept him out of action from April 10 to May 16, followed by a rib cage injury that sent him to the injured list for 20 days in August.