Jans just completed his first season as the Falcons' head coach.
The team went 21-12 and finished in third place in the MAC East division with an 11-7 record in conference play.
The Falcons reached the second round of the CollegeInsider.com Postseason Tournament, where they were eliminated by Canisius.
In a statement, Bowling Green said Jans was fired after an investigation into his "recent" public conduct.
"The University concluded that Jans' public conduct failed to meet his obligations as a head coach and the expectations that BGSU Athletics has for its coaches," the statement reads.
Assistant coach Mark Downey will take over the Falcons' day-to-day operations.
Before behind hired by Bowling Green, Jans served seven seasons as a member of Wichita State's coaching staff.
Source: Bowling Green is firing first-year basketball coach Chris Jans following an investigation into his public conduct.— Pete Thamel (@SIPeteThamel) April 2, 2015