The incident took place last night in a sleeper bus which was on its way to Loharu in Haryana from Pilani.
In her complaint, the woman said she was the lone passenger in the bus and was raped first by the conductor Kalia (36) and later by the unidentified driver, police said.
After the incident, they abandoned her at an isolated area, the police said, adding, that an FIR has been registered against the accused.
"A search is on for the accused, who are absconding," a police official said.