Marciniak

Marciniak is a Polish surname, it may refer to:
 * Adam Marciniak (born 1988), Polish footballer
 * Anna Marciniak (born 1979), Polish planetary scientist
 * Artur Marciniak (born 1987), Polish footballer
 * Florian Marciniak (1915–1944), Polish resistance fighter
 * Michelle M. Marciniak (born 1973), American basketball player
 * Ron Marciniak (1932–2020), American football player
 * Szymon Marciniak (born 1981), Polish football referee
 * Włodzimierz Marciniak (born 1954), Polish political scientist, diplomat