The All-Russian nation or triune Russian nation, also called the pan-Russian nation, is the term for the Imperial Russian and later irredentist ideology that sees the Russian nation as comprising a "trinity" of sub-nations: Great Russia, Little Russia, and White Russia. Respectively, these sub-nations are contextually identified with Russians, Ukrainians, and Belarusians. Above all, the basis of the ideology's upholding of an inclusive Russian identity is centered around bringing all East Slavs under its fold.

Russian irredentism refers to territorial claims made by the Russian Federation to territories that were historically part of the Russian Empire and the Soviet Union, which Russian nationalists refer to as the "Russian world". It seeks to politically incorporate ethnic Russians and Russian speakers living in neighbouring territories outside Russia's modern-day borders. This ideology has been significantly defined by the regime of Vladimir Putin, who has governed the country since 1999.