Timothy "Tim" O'Brien is an American politician and businessman serving as a member of the Indiana House of Representatives from the 78th district.

He earned a Bachelor of Arts degree in economics from the University of Southern Indiana in 2015.

[1] Outside of politics, O'Brien works as a real estate agent and broker.

In 2019, he became president of the Southwest Indiana Association of Realtors.

In 2019, O'Brien ran unsuccessfully for the Evansville City Council.