Temple of Juno Regina, Ancient religious temple in Porticus Octaviae, Rome, Italy.

The Temple of Juno Regina was a temple in the southern Campus Martius of ancient Rome, near the Circus Flaminius. A portico linked it to a temple of Fortuna, possibly the Temple of Fortuna Equestris, and the Temple of Jupiter Stator was later built beside it. Both temples were enclosed by the Portico of Metellus, rebuilt by Augustus as the Porticus Octaviae after 27 BC.

The consul Marcus Aemilius Lepidus vowed the temple in 187 BC during his final battle against the Ligurians and dedicated it on 23 December 179 BC, while serving as censor. It stood in the southern Campus Martius, near the Circus Flaminius, linked by a portico to a temple of Fortuna. A temple of Jupiter Stator was later built beside it, and both were enclosed by the Porticus Metelli; Augustus rebuilt the portico and temples as the Porticus Octaviae after 27 BC.

The epithet Regina, "Queen", was a state cult title: the temple was vowed by consul Marcus Aemilius Lepidus in 187 BC during his campaign against the Ligurians and dedicated on 23 December 179 BC. A portico linked it to a temple of Fortuna, possibly Fortuna Equestris, and the complex was later rebuilt by Augustus as the Porticus Octaviae.

The temple stood in the southern Campus Martius, probably south of Pompey's Portico on the eastern side of the Circus Flaminius; no ruins are identified on site today. Look for the area between Largo di Torre Argentina and the Theatre of Marcellus, where the later Porticus Octaviae was rebuilt after 27 BC.

The temple was linked by a portico to a temple of Fortuna, possibly the Temple of Fortuna Equestris. Later the Temple of Jupiter Stator was built beside it, and the Porticus Metelli enclosed both. Augustus rebuilt the portico and both temples after 27 BC as the Porticus Octaviae.