Trudna
{{Infobox settlement
| name = Trudna
| settlement_type = Village
| total_type =
| image_skyline = Watermill old photo.jpg
| image_caption = Old watermill in Trudna
| subdivision_type = Country
| subdivision_name = {{POL}}
| subdivision_type1 = Voivodeship
| subdivision_name1 = Greater Poland
| subdivision_type2 = County
| subdivision_name2 = Złotów
| subdivision_type3 = Gmina
| subdivision_name3 = Lipka
| coordinates = {{coord|53|32|16|N|17|5|27|E|region:PL|display=title,inline}}
| pushpin_map = Poland
| pushpin_label_position = right
| timezone = CET
| utc_offset = +1
| timezone_DST = CEST
| utc_offset_DST = +2
| population_total = 140
| registration_plate = PZL
}}
Trudna {{IPAc-pl|'|t|r|u|d|n|a}} is a village in the administrative district of Gmina Lipka, within Złotów County, Greater Poland Voivodeship, in north-central Poland.{{TERYT}} It lies approximately {{convert|12|km|mi|0}} north-west of Lipka, {{convert|20|km|mi|0|abbr=on}} north of Złotów, and {{convert|127|km|mi|0|abbr=on}} north of the regional capital Poznań.
It is situated on the Debrzynka River in ethnocultural region of Krajna in northern Greater Poland, on its border with Pomerania.
History
The territory became a part of the emerging Polish state under its first historic ruler Mieszko I in the 10th century. Trudna was a private village of Polish nobility, administratively located in the Nakło County in the Kalisz Voivodeship in the Greater Poland Province.{{cite book|author= |title=Atlas historyczny Polski. Wielkopolska w drugiej połowie XVI wieku. Część I. Mapy, plany|year=2017|language=pl|location=Warsaw|publisher=Institute of History, Polish Academy of Sciences|page=1b}} It was annexed by Prussia in the First Partition of Poland in 1772, and from 1871 to 1945 it was part of Germany.