Ronald Weiser

Ron Weiser
Chair of the Michigan Republican Party
In office
February 6, 2021 – February 18, 2023
Preceded byLaura Cox
Succeeded byKristina Karamo
In office
February 11, 2017 – February 23, 2019
Preceded byRonna McDaniel
Succeeded byLaura Cox
In office
February 1, 2009 – January 29, 2011
Preceded bySaul Anuzis
Succeeded byBobby Schostak
Member of the University of Michigan Board of Regents
Assumed office
January 1, 2017
Preceded byLaurence Deitch
United States Ambassador to Slovakia
In office
December 5, 2001 – December 19, 2004
PresidentGeorge W. Bush
Preceded byCarl Spielvogel
Succeeded bySkip Vallee
Personal details
Born (1945-07-07) July 7, 1945 (age 79)
South Bend, Indiana, U.S.
Political partyRepublican
SpouseEileen Weiser (m. 1983-2021)
Children3
EducationUniversity of Michigan (BA)

Ronald N. Weiser (born July 7, 1945) is an American businessman and Republican Party donor and financier. Weiser founded a real estate company. He held fundraising roles for the presidential campaigns of George W. Bush and John McCain. He was chairman of the Michigan Republican Party from 2009–2011, 2017–2019, and 2021–2023. He was U.S. ambassador to Slovakia during Bush's first term (2001–2004), and was elected to the Board of Regents of the University of Michigan in 2016.