Cognomen น้ำท่วม (Flod 
, น้ำท่วม, Phonlumdab 
) , around the globe, is a rare surname. The cognomen น้ำท่วม is characteristic of Northern Europe, particularly Sweden, where it is quite a rare surname, Norway, where it is a rare surname, and Finland. Much less frequently, น้ำท่วม is the forename as well as the last name.