| La Sen Thai | |
| King of Lan Xang | |
| Reign: | 1486–1496 |
| Coronation: | 1486 |
| Predecessor: | Souvanna Banlang |
| Successor: | Somphou |
| Issue: | Prince Somphou |
| Dynasty: | Khun Lo |
| Father: | Chakkaphat Phaen Phaeo |
| Religion: | Therevada Buddhism |
| Birth Name: | Tieng Lakon |
| Birth Date: | 1462 |
| Birth Place: | Muang Sua, Lan Xang |
| Death Date: | 1496 |
| Death Place: | Muang Sua, Lan Xang |
| Regnal Name: | Samdach Brhat-Anya Chao Lankasena Daya Buvananatha Raja Sri Sadhana Kanayudha |
La Sen Thai or La Sen Thai Puvanart was the king of Lan Xang from 1486 until 1496. He succeeded his older brother King Souvanna Banlang.[1]
Laasaenthai was the sixth son of King Sai Tia Kaphut, Governor of Nongkai before his accession. Succeeded on the death of his childless elder brother, 1486. Crowned in 1491. He enjoyed peaceful relations with his neighbours in Vietnam led by Lê Thánh Tông and cultivated good relations with the Ayutthaya Kingdom, spending much of his time contemplating religious and legal matters, furthering the spread of Buddhism and building monuments. He was succeeded by his only son, Somphou.