An exemplar is a person, a place, an object, or some other entity that serves as an excellent example of a given concept (e.g. "The heroine became an exemplar in courage to the children"). It may also refer to:

• Exemplar (Kuhn), concept from Thomas Kuhn's The Structure of Scientific Revolutions
• Exemplar (textual criticism)
• In exemplification theory, instance of an event population that shares essential features with all other instances from the group of events
• Handwriting exemplar, writing sample that can be examined forensically
• USS Dorothea L. Dix (AP-67), ship known in 1940 as the SS Exemplar