Last name เลิศฤทธิ์กนก (เลิศฤทธิ์กนก 
) , around the globe, is an extremely rare surname. The cognomen เลิศฤทธิ์กนก is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| เลิศฤทธิ์กนก | Thailand |