Johnny Olszewski | |
|---|---|
 Official portrait, 2025 | |
| Member of the U.S. House of Representatives from Maryland's 2nd district | |
| Assumed office January 3, 2025 | |
| Preceded by | Dutch Ruppersberger |
| 14th Executive of Baltimore County | |
| In office December 3, 2018 – January 3, 2025 | |
| Preceded by | Donald Mohler |
| Succeeded by | D'Andrea Walker (acting) |
| Member of the Maryland House of Delegates from the 6th district | |
| In office June 12, 2006 – January 14, 2015 | |
| Appointed by | Bob Ehrlich |
| Preceded by | John S. Arnick |
| Succeeded by | Robin Grammer Jr. |
| Personal details | |
| Born | September 10, 1982 Baltimore, Maryland, U.S. |
| Political party | Democratic |
| Spouse(s) |
Marisa Azzone (m. 2005) |
| Children | 1 |
| Education | Goucher College (BA) George Washington University (MA) University of Maryland, Baltimore County (PhD) |
| Signature |  |
| Website | House website |
John Anthony Olszewski Jr. (/oʊˈʃɛski/ oh-SHESK-ee; born September 10, 1982), also known by his nickname Johnny O, is an American politician. He has been a member of the U.S. House of Representatives from Maryland's 2nd congressional district since 2025. He is a member of the Democratic Party. He was the 14th county executive of Baltimore County, Maryland, from 2018 to 2025.
