Family name Maddage (Maddage 
) , across the world, is a rare last name. The surname Maddage is characteristic of Sri Lanka, where it is quite a rare surname, New Zealand, where it is a very rare surname, and the United States. Not in comparison with a country's population, it is the most numerous in Sri Lanka, the United States, and the United Kingdom. Also, Maddage is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Maddage | Sri Lanka, United Kingdom, France, New Zealand, United States |