Marciniak (plural Marciniaks)
- A surname.
- According to the 2010 United States Census, Marciniak is the 11821st most common surname in the United States, belonging to 2647 individuals. Marciniak is most common among White (96.49%) individuals.
Marciniak m pers or f
declension of Marciniak
The feminine surname is indeclinable.