Family name โอฬารฤทธิ์ (โอฬารฤทธิ์ 
) , in the entire world, is a very rare cognomen. The last name โอฬารฤทธิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, โอฬารฤทธิ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| โอฬารฤทธิ์ | Thailand |