The Province of Prussia (German: Provinz Preußen; Lithuanian: Prūsijos provincija; Polish: Prowincja Prusy; Kashubian: Prowincjô Prësë) was a province of the Kingdom of Prussia from 1824 to 1878.

[1] Königsberg (present-day Kaliningrad, Russia) was the provincial capital.

After the coronation, the term "Province of Prussia" was used to designate East Prussia to differentiate the former duchy's territory within the larger kingdom.

The province was formed in a merger with the pre-existing provinces of East Prussia and West Prussia joined together in a personal union and, from 3 December 1829, in a real union.

Its territory included the entire historical region of Prussia, from which the province and the kingdom derived their names, as well as Pomerelia and (following the Congress of Vienna) parts of Greater Poland.