The Board of Liquidators was a Ferengi agency, a part of the Ferengi Commerce Authority where its liquidators assembled.
This agency had the authority to close the Ferengi Market Exchange and to remove a Grand Nagus. In 2373, the Board called an emergency meeting with Grand Nagus Zek over some questionable decisions he had made. However, with the help of Quark and Ishka, he was able to convince the Board of Liquidators to not remove him from office. (DS9: "Ferengi Love Songs")