Mariamne I, also called Mariamne the Hasmonean (died 29 BCE) is the second wife of Herod the Great.

She is known for her great beauty, as is her brother Aristobulus.

Ultimately this is the main reason for the downfall of the Hasmonean dynasty of Judea.

Her name is spelled Mariame by Josephus, but in some editions of his work the second m is doubled (Mariamme).

In later copies of those editions the spelling is dissimilated to its now most common form, Mariamne.

In Hebrew, Mariamne is known as Miriam, as in the traditional, Biblical name.