Więcek is a Polish surname. Notable people include:
- Feliks Więcek (1904-1978), Polish cyclist
- Maksymilian Więcek (1920-2006), Polish ice hockey player
- Margaret Wiecek, Polish-American operations researcher
- Miroslav Wiecek (1931-1997), Czech footballer
- Piotr Więcek (born 1990), Polish racing driver
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