List of musical instruments by Hornbostel-Sachs number: 321.31
（重定向自Spike fiddle）
This is a list of instruments by Hornbostel-Sachs number, covering those instruments that are classified under 321.31 under that system. These instruments are also known as spike lutes. These instruments are made of a resonator and string bearer that are physically united, with strings in parallel to the sound table and a handle which is also the string bearer and which passes diametrically through the resonator. The shape of the resonator divides the instrument into one of three subcategories: spike bowl lutes, spike box lutes and spike tube lutes.