![](http://upload.wikimedia.org/wikipedia/commons/thumb/9/99/Wiktionary-logo-en-v2.svg/40px-Wiktionary-logo-en-v2.svg.png)
Look up sa:उदयन in Wiktionary, the free dictionary.
Udayana may refer to:
- Udayana, Indian philosopher
- Udayana (king), legendary Indian king
- Udayanan Vasavadatta, 1947 Indian film
- Udayana Kirindigoda, Sri Lankan politician
- Udayana Warmadewa, king of Bali
- Oddiyana or Udayana, a kingdom of early medieval India