Ronald Weiser
| Ron Weiser | |
|---|---|
| Chair of the Michigan Republican Party | |
| In office February 6, 2021 – February 18, 2023 | |
| Preceded by | Laura Cox | 
| Succeeded by | Kristina Karamo | 
| In office February 11, 2017 – February 23, 2019 | |
| Preceded by | Ronna McDaniel | 
| Succeeded by | Laura Cox | 
| In office February 1, 2009 – January 29, 2011 | |
| Preceded by | Saul Anuzis | 
| Succeeded by | Bobby Schostak | 
| Member of the University of Michigan Board of Regents | |
| In office January 1, 2017 – January 1, 2025 | |
| Preceded by | Laurence Deitch | 
| Succeeded by | Carl Meyers | 
| United States Ambassador to Slovakia | |
| In office December 5, 2001 – December 19, 2004 | |
| President | George W. Bush | 
| Preceded by | Carl Spielvogel | 
| Succeeded by | Skip Vallee | 
| Personal details | |
| Born | July 7, 1945 South Bend, Indiana, U.S. | 
| Political party | Republican | 
| Spouse | Eileen Weiser (m. 1983-2021) | 
| Children | 3 | 
| Education | University of Michigan (BA) | 
Ronald N. Weiser (born July 7, 1945) is an American businessman, philanthropist, diplomat, politician, and political fundraiser. He is the founder of McKinley Associates Inc., a real estate investment company. From 2001 to 2004, he served as U.S. Ambassador to Slovakia under the George W. Bush administration. A major donor and financier for the Republican Party, Weiser played key fundraising roles in the presidential campaigns of George W. Bush, John McCain, and Donald Trump. He was elected to the University of Michigan Board of Regents in 2016, serving until 2025, and chaired the Michigan Republican Party during three separate terms (2009–2011, 2017–2019, and 2021–2023).