Alex Rhodes, Scott P Fitzgerald, Oli Skulason, Thomas Pinault and Gavin Tomlin have all been told they have no future at Griffin Park.
Manager Scott Fitzgerald hopes to move them on during the January transfer window in order to sign new players.
"When the January transfer window opens next week, I am hopeful that we will be able to introduce three or four new faces into the squad," he said.
Although the Bees are bottom of the table, they gave themselves hope of survival with a 2-1 home win over Chesterfield on Saturday - their first win in three months.