Presumptive may refer to:
- Heir presumptive, a person who is expected to inherit a throne, peerage, or other hereditary honor, but their position can be displaced by the birth of another person with a better claim to the position.
- Presumptive nominee, a person who is candidate for President who has not yet received a party nomination, but is expected to receive that nomination in the near future.
- Speaker-presumptive, a person who is not yet the speaker of a parliament, but is expected to become the speaker in the near future
- The Presumptive Tax Regime in Pakistan.
- Presumptive mood, or irrealis mood, a grammatical mood.