Steven Leo Driehaus (born June 24, 1966) is an American politician and former U.S. Representative for Ohio's 1st congressional district, serving from 2009 until 2011.

The district included the western four-fifths of Cincinnati, as well as suburbs north and west of the city in Hamilton and Butler counties.

Driehaus, a 1984 graduate and class president of Elder High School in Cincinnati,[2] studied political science at Miami University while earning a Bachelor of Arts degree in 1988.

[6] Driehaus then served as Associate Director of the Center for International Education and Development Assistance at Indiana University.

[7] He began his political career as an aide for Cincinnati City Council Member Todd Portune and former U.S. Rep. Charlie Luken in the 1990s.

[8] He served as Minority Whip of the Ohio House of Representatives from the beginning of his third term in January 2005 until he resigned from the position to be replaced by Fred Strahorn in December 2007 due to his campaign.

[14] In 2000, Driehaus ran for the Ohio House of Representatives from the 33rd district, which at the time included Delhi Township, Price Hill, Sayler Park and other parts of western Hamilton County.

[18][19] Driehaus has served the 31st Ohio House of Representatives district, which has included wards 19–22, 25 & 26 of Cincinnati as well as Cheviot, Cleves, North Bend, and Addyston since the 2002 redistricting.

[8] He had been elected as the Minority Whip of the Ohio House of Representatives, replacing Dale Miller for the beginning of the 2005 session, in a November 2004 vote after being reelected to his third term.

[35][37] The DCCC has named the district's race as one of the thirteen that it is supporting in hopes of ousting a Republican incumbent in the 2008 United States House of Representatives elections.

In the November 4 election, Driehaus defeated incumbent Chabot with 52 percent of the vote, largely on the strength of a 16,000-vote margin in Hamilton County.

In October 2012 Driehaus filed a criminal complaint against the Susan B. Anthony List claiming the organization violated Ohio law against making false statements in a campaign advertisement.

Driehaus later sued the List, claiming the group caused his "loss of livelihood" by "defaming" him by saying he supported taxpayer funded abortion due to his vote for the Affordable Care Act.

In March 2011, Driehaus was selected for an approximately two and a half years tenure as the Peace Corps' director of HIV and AIDS education in Eswatini.