Banasiak

Banasiak is a gender-neutral Polish surname that may refer to
 * Adam Banasiak (born 1989), Polish football player
 * Aleksandra Banasiak (born 1935), Polish nurse
 * Aude Banasiak (born 1975), French football midfielder
 * Justyna Banasiak (born 1986), Polish group rhythmic gymnast
 * Mark Banasiak, Australian politician
 * Piotr Banasiak (born 1987), Polish football player