Surname Macelko (Macelko 
) , in all the world, is a very rare cognomen. The surname Macelko is characteristic of Italy, where it is an extremely rare surname, the United Kingdom, and Canada. Not in comparison with a country's population, it is the most numerous in Italy, the United States, and the United Kingdom. More frequently, Macelko is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Macelko | United Kingdom, Italy, United States, Poland, Canada |