A bulletin board is a place where people can leave public messages, for example, to advertise things to buy or sell, announce events, or provide information. Bulletin boards are often made of a material such as cork to facilitate addition and removal of messages.

Bulleitn boards are particularly prevalent at universities. Many sport dozens, if not hundreds or thousands of public bulletin boards, used for everything from advertisements by extracurricular groups and local shops to official notices. Dormitory corridors, well-trafficed hallways, lobbies, and freestanding kiosks often have cork boards attached to facilitate the posting of notices. At some universities, lampposts, bollards, trees, and walls often become impromptu postering sites in areas where offical boards are sparse.

Other meanings of "bulletin board" include:

• Computerised bulletin boards, also known as bulletin board systems, have been popular for many years. The term is also used to mean an Internet forum.

• An album by The Partridge Family is named Bulletin Board.

• Bulletin board is the name of one of a basic graphics widget in the OSF/Motif software programming framework.

de:Schwarzes Brett