From Wikipedia, the free encyclopedia
- job (e.g. JP for a magistrate (Justice of the Peace), or
- title (Kt for a Knight Bachelor or Bt for a Baronet, QC for a Queen's Counsel or
- is a member of an order of chivalry e.g. OBE.
Academic degrees (qualifications from a university) can also be shown as postnominal letters, as can military awards (medals and decorations)