Klong yao (Thai: กลองยาว, pronounced [klɔːŋ jaːw]) is a long drum used in Thailand and Khawng yao in Great Laos. It is generally slung over the shoulder and played with the hands. It has a wooden body and a drumhead made from water buffalo skin, and is usually decorated with a colorful skirt. It is played in many festival parades in Thailand. Extremely large klong yao, which may be up to 10 m in length, are sometimes encountered in parades, where they are carried by truck.