The Titan is a novel written by Theodore Dreiser in 1914. It is Dreiser's sequel to The Financier. Sometime after being released from prison, Frank invests in stocks subsequent to the Panic of 1873, and becomes a millionaire again.

He decides to move out of Philadelphia and start a new life in the West. He moves to Chicago with Aileen and his attorney is finally able to persuade Lillian to agree to a divorce. Frank decides to take over the street-railway system. He bankrupts several opponents with the help of John J. McKenty and other political allies.

Meanwhile, Chicago society finds out about his past in Philadelphia and the couple are no longer invited to dinner parties; after a while, the press turns on him too. Cowperwood is unfaithful many times. Aileen finds out about a certain Rita and beats her up. She gives up on him and has an affair with Polk Lynde, a man of privilege; she eventually loses faith in him. Meanwhile, Cowperwood meets young Berenice Fleming; by the end of the novel, he tells her he loves her and she consents to live with him.