Ostrza
{{Infobox settlement
| name = Ostrza
| settlement_type = Settlement
| total_type =
| image_skyline =
| image_caption =
| image_flag =
| image_shield =
| image_map =
| subdivision_type = Country
| subdivision_name = {{POL}}
| subdivision_type1 = Voivodeship
| subdivision_name1 = Pomeranian
| subdivision_type2 = County
| subdivision_name2 = Człuchów
| subdivision_type3 = Gmina
| subdivision_name3 = Debrzno
| coordinates = {{coord|53|33|4|N|17|1|12|E|region:PL|display=title,inline}}
| pushpin_map = Poland
| pushpin_label_position = right
| elevation_m =
| population_total = 26
| website =
}}
Ostrza {{IPAc-pl|'|o|s|t|sz|a}} is a settlement in the administrative district of Gmina Debrzno, within Człuchów County, Pomeranian Voivodeship, in northern Poland.{{TERYT}} It lies approximately {{convert|15|km|mi|0|abbr=on}} west of Debrzno, {{convert|26|km|mi|0|abbr=on}} south-west of Człuchów, and {{convert|140|km|mi|0|abbr=on}} south-west of the regional capital Gdańsk.
For details of the history of the region, see History of Pomerania.