The 2006 Washington, D.C. mayoral election also known as 2006 District of Columbia mayoral election determined the successor to two-term mayorAnthony A. Williams, who did not run for re-election. The Democratic primary was held on September 12, 2006, and the general election was held on November 7, 2006. The winner of both was Adrian Fenty, the representative for Ward 4 on the Washington, D.C. City Council. He took office on January 2, 2007, becoming the sixth directly elected mayor since the establishment of home rule in the District, and — at 35 — the youngest elected mayor of a major American city in U.S. history.
David W. Kranich ran in the Republican Party primary election. Albert Ceccone gathered signatures to run on the ballot as well, but after a challenge by Kranich, the District of Columbia Board of Elections and Ethics declared many of the signatures invalid. Consequently, Ceccone did not have enough valid signatures to appear on the ballot, and only Kranich's name appeared as running for mayor on the Republican primary ballot. Kranich received 65% of the vote.