Plaque or placque may refer to:
- Commemorative plaque, a flat ornamental plate or tablet fixed to a wall, used to mark a significant event, person, etc.
- Plaquette, a small decorative plaque in metal, ceramics, or other materials
- Memorial Plaque, issued to next-of-kin of dead British military personnel after World War I
- Plaque, a rectangular casino token
Read more about Plaque: In Biology