Kalju Orro (born 27 March 1952)[1] is an Estonian stage, film and television actor, acting instructor, lecturer, theatre producer, and pedagogue.

Among his graduating classmates were Merle Karusoo, Ago-Endrik Kerge, Urmas Kibuspuu, Lembit Peterson, Aare Laanemets, Jüri Krjukov, Anne Paluver, Külliki Tool, Priit Pedajas, Eero Spriit, and Peeter Volkonski.

[1] Among his more memorable international roles during his long career at the Tallinn City Theatre include those in works by such authors and playwrights as: Lyudmila Petrushevskaya, Dale Wasserman, Celestino Gorostiza, Aleksis Kivi, David Pownall, Luchino Visconti, Anton Chekhov, Dario Fo, Terry Johnson, Brecht and Weill, William Shakespeare, Mark Twain, Alexandre Dumas, Thomas Mann, David Storey, Evelyn Waugh, Luigi Pirandello, Peter Barnes, David Hair, Tom Stoppard, Marina Carr, William Boyd, Nikolai Gogol, Dorota Masłowska, and Maxim Gorky.

Notable roles in works by Estonian authors and playwrights include those of: A. H. Tammsaare, Hugo Raudsepp, Jaanus Rohumaa, Jaan Tätte, Madis Kõiv, and Paavo Piik.

[1] In addition to acting, Orro has written, compiled, and contributed to a number of published books on the history of Estonian theatre, including the two-volume Lavakooliraamat (2007 and 2010).