The Regia was a structure in the Forum of Ancient Rome, originally the residence of the Kings. Regia may also refer to:

Latin Aqua regia, mixture of concentrated nitric acid and concentrated hydrochloric acid Regia Anglorum, British medieval reenactment organisation Bulla Regia, former Roman city near modern Jendouba, Tunisia Editio Regia, third and the most important edition of the Greek New Testament of Robert Estienne Via Regia, "King's Highway" "Vivas Schola Regia", song of the Royal High School of Edinburgh. Regia, a classical type of building.

Italian Regia Marina, "Royal Navy" 1861-1946 Regia Aeronautica, "Royal Air Force" 1923-46 Scala Regia, "Royal Staircase" Sala Regia (disambiguation), "Regal Room or Hall"

Spanish Fuerza Regia, Mexican professional basketball team based in Monterrey

See also Regis (disambiguation) (Latin "of the king") Regius (disambiguation) (Latin "royal" masculine adjective) Regium (disambiguation) (Latin "royal" neuter adjective)