Kevin R. Herget (born April 3, 1991) is an American professional baseball pitcher who is a free agent. He has previously played in Major League Baseball (MLB) for the Tampa Bay Rays and Cincinnati Reds.
 Born in Teaneck, New Jersey, Herget played prep baseball at Park Ridge High School in Park Ridge, New Jersey. He attended Kean University, where he played college baseball.
 The St. Louis Cardinals selected Herget in the 39th round of the 2013 Major League Baseball draft. He made his professional debut with the Low-A State College Spikes. In 2014, he split the season between the Single-A Peoria Chiefs and High-A Palm Beach Cardinals, pitching to a cumulative 8–3 record and 2.71 ERA with 94 strikeouts and 4 saves in 76.1 innings of work. He spent 2015 with Palm Beach and the Double-A Springfield Cardinals, posting a 5–2 record and 2.64 ERA with 74 strikeouts and 7 saves in 42 appearances. In 2016, Herget reached Triple-A for the first time with the Memphis Redbirds. In 49 appearances between Palm Beach, Springfield, and Memphis, he recorded a stellar 5–0 record and 2.02 ERA with 61 strikeouts and 16 saves in 62.1 innings pitched.
 In 2017, Herget played for Springfield and Memphis, pitching to a 5–4 record and 3.97 ERA with 81 strikeouts and 5 saves in 81.2 innings of work. He spent the 2018 season with Memphis and recorded a 9–11 record and 4.61 ERA with 121 strikeouts in 138.2 innings pitched across 28 games (22 starts). After undergoing Tommy John surgery, Herget missed the majority of the 2019 season as a result, making only two rehab appearances with the Gulf Coast Cardinals. He did not play in a game in 2020 due to the cancellation of the minor league season because of the COVID-19 pandemic. Herget became a minor league free agent on November 1, 2020.
 On January 25, 2021, Herget signed with the Fargo-Moorhead Redhawks of the American Association of Professional Baseball. He started one game for the team, allowing one run on three hits in 7.0 innings pitched en route to the victory.
 On May 24, 2021, Herget’s contract was purchased by the Cleveland Indians organization. Herget made 28 appearances (7 starts) for the Triple-A Columbus Clippers, posting a 7–5 record and 4.48 ERA with 85 strikeouts and 2 saves in 80.1 innings pitched. He was released by the organization on October 4, 2021.
 On April 12, 2022, Herget signed with the Charleston Dirty Birds of the Atlantic League of Professional Baseball. On April 19, the team announced that Herget would be their Opening Day starter against the Staten Island FerryHawks. In three starts for the club, Herget pitched to a 4.24 ERA with 19 strikeouts in 17.0 innings of work.
 On May 11, 2022, the Tampa Bay Rays signed Herget to a minor league deal. With the Triple-A Durham Bulls, he posted a 2.45 earned run average (ERA) in 80+2⁄3 innings. On August 19, the Rays selected Herget to the 40-man roster and promoted him to the major leagues for the first time. However, he was designated for assignment on August 23 and cleared waivers without appearing in a game, briefly becoming a phantom ballplayer. 
 He was selected again to the major league roster on September 12, and made his major league debut the next day. On September 22, Herget was designated for assignment. He again cleared waivers and was sent outright to Durham on September 26. On October 3, Herget's contract was once again selected after Easton McGee was designated for assignment. He allowed four runs in 4.1 innings pitched against the Boston Red Sox, and was designated for assignment the next day. He cleared waivers for a third time on October 6. He rounded out his rookie campaign with three major-league appearances, going 0–1 with a 7.71 ERA and 4 strikeouts in 7.0 innings pitched. On October 14, Herget elected to become a free agent.
 On November 10, 2022, Herget signed a minor league contract with the Cincinnati Reds organization. Herget did not make the team out of spring training and was assigned to the Triple-A Louisville Bats to begin the 2023 season.
 On April 5, 2023, Herget was selected to the 40-man roster, and promoted to the active roster to replace Joel Kuhnel, who was optioned to Triple-A. On May 11, against the New York Mets, Herget entered the game in the seventh inning and pitched three scoreless innings to record his first career save. In 11 appearances for Cincinnati, he registered a 5.73 ERA with 11 strikeouts across 22.0 innings of work. Herget was designated for assignment by Cincinnati on June 19, after Joey Votto was activated from the injured list. He cleared waivers and was sent outright to Triple–A Louisville on June 22. On September 5, Herget was selected back to the major league roster. He was designated for assignment again on September 8. Herget cleared waivers and was sent outright to Triple–A Louisville on September 10. On October 3, Herget elected free agency.