Timothy Hagan (born March 18, 1946) is an American politician who served as Cuyahoga County Commissioner and other local offices from the 1980s through 2000s, and was his party's nominee for the governorship of Ohio in 2002.

In 1978, Hagan became chairman of the Cuyahoga County Democratic Party, beating Garfield Heights ward leader Henry S. Trubiano.

In 1992, with White's endorsement, Hagan made an unsuccessful bid for a seat in the U.S. House of Representatives, losing in the Democratic primary to incumbent U.S. Rep. Mary Rose Oakar.

Hagan described himself as an avowed liberal, ingrained by his father's politics, and expressed regret at the conservative trend in the Democratic Party in the 1990s.

However, he allowed for compromises with his innate liberalism, agreeing to go along with government funding for the Cleveland Gateway project, which included the construction of Jacobs Field and Gund Arena.

It was 1994, however, and the booming economy mitigated the county treasury's losses and Hagan managed to win re-election to the board of commissioners.

In 1996, Hagan announced that he would retire from electoral politics after his term expired at the end of 1998, stating: "I'm in the twilight of a mediocre career.

The federal court in the Northern District of Ohio found that Hagan's commercial neither infringed nor diluted the AFLAC mark.

In February 2004, Hagan announced his intention to run again for a seat on the Cuyahoga County commission against fellow Democrat and former colleague, Tim McCormack.