Step 1: Analyze the terms.
- Drawer, Drawee, and Payee are all related to negotiable instruments (like cheques or bills of exchange).
- Notary public, however, is a government-appointed official responsible for witnessing signatures and certifying documents.
Step 2: Conclusion.
Therefore, the odd one out is Notary public, as it is not related to negotiable instruments.
Final Answer: \[ \boxed{Notary \; public} \]