Proleptic may refer to:
* Prolepsis, several meanings related to foreshadowing
* Proleptic calendar, a calendar that is applied to dates before its introduction
*
Proleptic syllogism A prosleptic syllogism (; from Ancient Greek, Greek πρόσληψις ''proslepsis'' "taking in addition") is a class of syllogisms that use a prosleptic proposition as one of the premises.
The term originated with Theophrastus.