William Gregory Rothman (born December 10, 1966) is an American politician who has served as chairman of the Pennsylvania Republican Party since 2025.

[4] Rothman was chair of the Bush-Cheney 2004 re-election campaign in Cumberland County, Pennsylvania.

[6] The vacancy arose from the resignation of Glen Grell, who stepped down to become executive director of the Pennsylvania Public School Employees' Retirement System.

[6] Rothman was the leading supporter of legislation, signed into law in 2019, that established 21 as the minimum age to purchase tobacco products, including e-cigarettes, except for active-duty military personnel and honorably discharged veterans, for which the minimum age remained 18.

The letter came after Trump's campaign lost multiple court cases due to lack of evidence.

[23] Rothman was also part owner of the Harrisburg Senators minor league baseball team.

The conviction was later expunged, by then governor Ed Rendell who issued Rothman a pardon in January 2011.