Mirjam

Also Afrikaans: https://af.wikipedia.org/wiki/A%C3%A4ron -- " Volgens Eksodus 7: 7 was hy drie jaar ouer as Moses maar jonger as Mirjam, hulle suster."

Also Hungarian: https://hu.wikipedia.org/wiki/M%C3%A1ria -- mentions Mirjam
http://www.nytud.hu/oszt/nyelvmuvelo/utonevek/osszesnoi.pdf
You'll find numerous bearers on social media.

Mirjam is also used in Denmark, Norway and Sweden, though the name is a little bit less common there than Miriam is:

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https://www.nordicnames.de/wiki/Mirjam (in English)

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A known Scandinavian bearer of this name is the Norwegian novelist Mirjam Kristensen (b. 1978):

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https://en.wikipedia.org/wiki/Mirjam_Kristensen (in English).

Also used in Hungary. Pronounced: MIR-yawm.

Also used in Sweden.

Also a feminine name in Slovenia.