Koh Kret or Kret island in the Chao Phraya River was created from the digging of a canal around a cape of the Chao Phraya River. In 1722, during the reign of King Thaisa of Ayutthaya, the island was called Khlong Lat Kret Noi which means a shortcut to Kret canal. Later, the current diverted, making the canal larger and turning the cape there into an island.