Atyashevsky (masculine), Atyashevskaya (feminine), or Atyashevskoye (neuter) may refer to:

  • Atyashevsky District, a district of the Republic of Mordovia, Russia
  • Atyashevskoye Urban Settlement, a municipal formation into which Atyashevo Work Settlement in Atyashevsky District of the Republic of Mordovia, Russia is incorporated