Piek can be both a masculine given name and a surname. Notable people with the name include:
Piek Vossen (fl. 1995–present), professor at VU Amsterdam Christin Piek (1889–????), Belgian tug of war competitor Elisa Piek (born 1993), Dutch badminton player Leo Piek (1927–2013), Dutch wrestler Selena Piek (born 1991), Dutch badminton player