The phrase Chairman of the Board has several meanings:

• Chairman of the Board is the term used to denote the leader of a corporation's board of directors. See Chairman.
• American singer Frank Sinatra (1915-1998) is referred to by the nickname "The Chairman of the Board."
• Chairman of the Board is the title of a 1998 movie starring Courtney Thorne-Smith and Carrot Top.
• "Chairmanoftheboard" is a race horse that won the Cane Pace in 1985.