Surname ฤทธิภักดี (ฤทธิภักดี 
, Ritphukdee , Rittipukdee ) , in the world, is a rare cognomen. The last name ฤทธิภักดี is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| ฤทธิภักดี, Rittipukdee, Rithipakdee, Ritphukdee | Thailand |
Matthew, Rithipukdee, Ritthipakdee, Ritthiphakdee, Rittipakdee, and Rittiphakdee