Vlasa Mgeladze (Georgian: ვლასა მგელაძე; Russian: Власа Джарисманович Мгеладзе, Vlasa Dzharismanovich Mgeladze), alias Tria (Russian: Триа) (1868 – 1943), was a Georgian social democratic revolutionary and a Bolshevik-turned-Menshevik also known as a participant of the Persian Constitutional Revolution, of which he wrote a valuable account.