Udelny (; masculine), Udelnaya (; feminine), or Udelnoye (; neuter) is the name of several inhabited localities in Russia.
Urban localities Udelnaya, Moscow Oblast, a suburban (dacha) settlement in Ramensky District of Moscow Oblast
Rural localities Udelnoye, Kirov Oblast, a village in Shvarikhinsky Rural Okrug of Nolinsky District of Kirov Oblast Udelnoye, Alexeyevsky Rural Okrug, Sovetsky District, Mari El Republic, a village in Alexeyevsky Rural Okrug of Sovetsky District of the Mari El Republic Udelnoye, Vyatsky Rural Okrug, Sovetsky District, Mari El Republic, a village in Vyatsky Rural Okrug of Sovetsky District of the Mari El Republic Udelnaya, Mari El Republic, a village in Gornoshumetsky Rural Okrug of Yurinsky District of the Mari El Republic