Last name โอห์ (O 
, โอห์) , around the world, is a widespread cognomen. The cognomen โอห์ is habitual in Venezuela, where it is a common surname, Vanuatu, where it is quite a common surname, and Myanmar (explore the name in all countries). Measured by absolute frequency, the name is most common in China, Indonesia, and Venezuela. Likewise, โอห์ is the forename as well as the last name.