Nashism () and Nashists are post-Soviet Russian political neologisms derived from the word "наши" ("ours").

Nashism or Nashist may also refer to:

Nashists, members of the Second Situationist International movement, named after Jørgen Nash Nashi (1990s nationalist group), a 1991 movement by Alexander Nevzorov Nashi (youth movement), Russia, 2005