Udayana (disambiguation)

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