Norwich City chairman Roger Munby and chief executive Neil Doncaster have resigned and left the club with immediate effect.
The departure of the pair comes following the club's relegation to League One.
"We therefore believe it is in the best interests of the club for us to step down from our positions," they said in a joint statement on the club's official website.
"We would like to place on record our sincere thanks to all the staff at Carrow Road who work long and often anti-social hours to serve Norwich City's wonderful supporters."
A club statement added: "We want to sincerely thank both Roger and Neil for their hard work and commitment to the club over their years working with us.
"There will be further changes to the board. Meanwhile, an announcement about the executive management structure at the club will be made in the near future, once staff at Carrow Road and Colney have been fully consulted."