Somdet Phra Sri Suriyothai or Suriyothai was a royal consort during the 16th century Ayutthaya period of Siam (now Thailand). She is famous for having given up her life in the defense of her husband, King Maha Chakkraphat in a battle during the Burmese-Siamese War of 1548.

Suriyothai was queen during the early part of the reign of King Maha Chakkraphat (2091 to 2106 Buddhist Era, with another reign from 2111 to 2112 B.E.). In 1548 AD, barely six months into King Maha Chakkraphat's reign, the King of Burma invaded Siam with the intent of sacking the main capital, Ayutthaya.

As was the custom at the time, King Maha Chakkraphat led his troops in the defense of the city from atop his war elephant. Even though women were not permitted to take part in battle, Queen Suriyothai was so concerned for her husband that she disguised herself as a man and rode into battle on her own elephant.

During the battle with Burmese troops, King Maha Chakkraphat's elephant collapsed from wounds and he was in danger of being killed. Queen Suriyothai rode her elephant to protect her husband and was killed by a scythe.