Marcus Postumius Albinus Regillensis was an ancient Roman politician belonging to the patrician Postumia gens. His father and grandfather were both named Aulus, possibly identifying his father or grandfather as Aulus Postumius Albus Regillensis, consul in 464 BC. Publius Postumius Albinus Regillensis, consular tribune in 414 BC, was most likely his brother. Postumius relationship to later Postumii Albini remains unknown as filiations are missing from the consular tribunes and consuls of 397, 394 and 334 BC.