Johnny Olszewski

Johnny Olszewski
Official portrait, 2025
Member of the U.S. House of Representatives from Maryland's 2nd district
Incumbent
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	(1982-09-10) September 10, 1982 (age 42) Baltimore, Maryland, U.S.
Political party	Democratic
Spouse	Marisa Azzone ​ (m. 2005)​
Children	1
Education	Goucher College (BA) George Washington University (MA) University of Maryland, Baltimore County (PhD)
Signature
Website	House website
Olszewski's voice Olszewski on the Baltimore County Public Schools' 2023–2024 budget Recorded July 3, 2023

John Anthony Olszewski Jr.^[1] (/oʊˈʃɛski/ oh-SHESK-ee; born September 10, 1982), also known by his nickname Johnny O, is an American politician who has served as a member of the U.S. House of Representatives from Maryland's 2nd congressional district since 2025. A member of the Democratic Party, he served as the 14th county executive of Baltimore County, Maryland, from 2018 to 2025.

A member of the Democratic Party, Olszewski previously served as a student member of the Baltimore County Board of Education from 1999 to 2000, and two terms in the Maryland House of Delegates representing the 6th district from 2006 to 2015. The district covered most of the southeastern portion of Baltimore County, including the town of Dundalk, Maryland. Olszewski unsuccessfully ran for the Maryland Senate in District 6 in 2014, narrowly losing to Republican challenger Johnny Ray Salling. Olszewski became Baltimore County Executive in 2018 after narrowly defeating state senator James Brochin in the 2018 Democratic primary election and defeating former state Insurance Commissioner Alfred W. Redmer Jr. in the general election. Olszewski was re-elected in 2022, defeating Republican nominee Pat McDonough.

Olszewski first ran for the U.S. House of Representatives in 2024, defeating state delegate Harry Bhandari in a landslide in the Democratic primary and defeating radio host Kimberly Klacik in the general election. He was sworn in on January 3, 2025.