Piątek Wielki
{{Infobox settlement
| name = Piątek Wielki
| settlement_type = Village
| image_skyline = SM Piątek Wielki Kościół św Marcina Biskupa 2017 (4).jpg
| image_caption = Church of Saint Martin, the Bishop
| image_flag =
| image_shield =
| image_map =
| subdivision_type = Country
| subdivision_name = {{POL}}
| subdivision_type1 = Voivodeship
| subdivision_name1 = Greater Poland
| subdivision_type2 = County
| subdivision_name2 = Kalisz
| subdivision_type3 = Gmina
| subdivision_name3 = Stawiszyn
| coordinates = {{coord|51|54|N|18|5|E|region:PL|display=title,inline}}
| pushpin_map = Poland
| pushpin_label_position = right
| elevation_m =
| population_total =
| website =
}}
Piątek Wielki ({{IPA|pl|ˈpjɔntɛk ˈfjɛlkʲi}}) is a village in the administrative district of Gmina Stawiszyn, within Kalisz County, Greater Poland Voivodeship, in west-central Poland.{{TERYT}} It lies approximately {{convert|3|km|mi|0}} south-west of Stawiszyn, {{convert|16|km|mi|0|abbr=on}} north of Kalisz, and {{convert|98|km|mi|0|abbr=on}} south-east of the regional capital Poznań.