Wat Ku Khao (GPS: 18.74924, 99.01032; Thai: วัดกูขาว ) is the ruins of an ancient Thai Buddhist monastery in Wiang Kum Kam, in Chiang Mai, Thailand. This monastery is believed to date to the 16th-17th century. It is located beside the junction of the Chiang Mai-Lamphun Road and its fifth alley, or Soi 5. It is one of many temples with the word "ku" to it, which in the local dialect means chedi or stupa.
What we see of Wat Ku Khao today is a brick structure. The Department of Fine Arts did some excavation and restoration work here in 1989. What remains include the ruins of a porch of the main entrance, and what's left of the wall on the north side. The area is now cleared of vegetation.
The chedi of Wat Ku Khao is in the Lanna style. It has a three tier square base, with each tier receding in size. On top of this are two tears of the lotus base with double torus moldings, with a large panel of stucco work at its indented corners in between. According to the Department of Fine Arts interpretive board, there are traces of two constructions here, one over the other.