Maximilla (3rd century AD) was a prophetess and an early advocate of Montanism.
Maximilla may also refer to:
Maximilla of Patras (1st century AD), apocryphal Christian saint Valeria Maximilla (), Roman empress and wife of Emperor Maxentius Maximilla of Sicily (), daughter of Count Roger I of Sicily and wife of Ildebrandino VI of the Aldobrandeschi family