Hipparchus, the common Latinization of the Greek Hipparkhos, can mean:
- Hipparchus, the ancient Greek astronomer
- Hipparchic cycle, an astronomical cycle he created
- Hipparchus (lunar crater), a lunar crater named in his honour
- Hipparchus (Martian crater), a crater on Mars named in his honour
- 4000 Hipparchus, an asteroid named in his honour
- Hipparcos, an astrometry space mission named in his honour
- Hipparchus (cavalry officer), commander of one hipparchia
- Epihipparch, commander of two hipparchiai
- Hipparchus (brother of Hippias), brother of Athenian tyrant Hippias
- Hipparchus of Euboea, an ancient Euboean tyrant
- Hipparchus (poet), an ancient Greek actor from Corinth
- Tiberius Claudius Hipparchus Marathonios, the richest man in the Roman Empire in the 1st century BC
- Hipparchus (dialogue), a dialogue ascribed to Plato