* Pentagon: A five-sided polygon.
* Pentagram: A five-pointed star.
* Pentathlon: An athletic contest consisting of five events.
* Pentecost: A Christian holiday that occurs fifty days after Easter, celebrating the descent of the Holy Spirit upon the Apostles.
* Pentameter: A line of poetry consisting of five metrical feet.
* Pentamerous: Having five parts or sections.
* Pentad: A group of five.
* Pentarchy: Government by five rulers.
* Pentacle: A five-pointed star used in ceremonial magic.