Charlie Sheen had a secret meeting with top execs at the FOX network ... TMZ has learned.

Sources familiar with the meeting tell TMZ ... Charlie sat down last Thursday with Mike Darnell, President of Alternative Entertainment for FOX, David Hill, President of FOX Sports, and Peter Rice, Chariman of Entertainment for FOX Networks Group.

During the meeting, which lasted more than an hour, the group brainstormed about various possible projects for Charlie, including a late night show.