| Udaya I | |
| King of Anuradhapura | |
| Reign: | 901–912 |
| Predecessor: | Sena II |
| Successor: | Kassapa IV |
| Dynasty: | House of Lambakanna II |
Udaya I was King of Anuradhapura in the 10th century, whose reign lasted from 901 to 912. He succeeded his brother Sena II as King of Anuradhapura and was succeeded by his nephew Kassapa IV.