Mariankowo, Greater Poland Voivodeship
{{see also|Mariankowo, West Pomeranian Voivodeship}}
{{Infobox settlement
| name = Mariankowo
| settlement_type = Village
| total_type =
| image_skyline =
| image_caption =
| image_flag =
| image_shield =
| image_map =
| subdivision_type = Country
| subdivision_name = {{POL}}
| subdivision_type1 = Voivodeship
| subdivision_name1 = Greater Poland
| subdivision_type2 = County
| subdivision_name2 = Wolsztyn
| subdivision_type3 = Gmina
| subdivision_name3 = Siedlec
| coordinates = {{coord|52|13|10|N|16|2|27|E|region:PL|display=title,inline}}
| pushpin_map = Poland
| pushpin_label_position = right
| elevation_m =
| population_total = 140
| website =
}}
Mariankowo {{IPAc-pl|m|a|r|j|a|n|'|k|o|w|o}} is a village in the administrative district of Gmina Siedlec, within Wolsztyn County, Greater Poland Voivodeship, in west-central Poland.{{TERYT}} It lies approximately {{convert|13|km|mi|0}} north-west of Wolsztyn and {{convert|63|km|mi|0|abbr=on}} west of the regional capital Poznań.