Jerome Williams is a former professional baseball player who played as a pitcher in Major League Baseball (MLB) for over a decade. Williams was born on December 4, 1981, in Honolulu, Hawaii, and attended Waipahu High School. He was drafted by the San Francisco Giants in the first round of the 1999 MLB draft.

Williams made his MLB debut with the Giants in 2003 and played for them until 2005. He then played for the Chicago Cubs, Washington Nationals, Los Angeles Angels, Houston Astros, Texas Rangers, and Philadelphia Phillies. Williams was known for his versatility as a pitcher, as he could pitch both as a starter and a reliever.

Throughout his career, Williams had a record of 52 wins and 66 losses, with an earned run average (ERA) of 4.59. He pitched a total of 1,029 innings and struck out 655 batters. Williams' best season was in 2004 when he had a record of 10 wins and 7 losses with an ERA of 4.24.

Williams also played in the postseason, making appearances in the 2011 American League Championship Series with the Angels and the 2015 National League Division Series with the Phillies. In the 2011 ALCS, Williams pitched in two games, allowing one run in two innings. In the 2015 NLDS, Williams pitched in one game, allowing two runs in two innings.

In addition to his MLB career, Williams also played in various international leagues. He played in the Chinese Professional Baseball League in 2013 and 2014, where he won a championship with the Uni-President 7-Eleven Lions. Williams also played in the Mexican Pacific League in 2015 and 2016, where he played for the Yaquis de Obregon.

Williams retired from professional baseball in 2018. He currently works as a pitching coach for the Lancaster Barnstormers of the Atlantic League of Professional Baseball. Williams is also involved in various charitable organizations, including the Boys and Girls Club of Hawaii and the Hawaii Foodbank.