Usul
# Usul

Usul may refer to:

## Ideas

* Usul al-fiqh, the principles of Islamic jurisprudence
* Usul al-Din, the principles of Islamic religion
* Usul (music), a rhythmic pattern used in Ottoman classical music.

## Characters

* Usul, the secret tribal name of Paul Atreides in Frank Herbert's Dune novels
* a species in Neopets
