In Jewish myth Naamah (indeed mentioned in the Bible as the sister of Tuval Kain, one of the early descendants of Adam and Eve) is often considered to be a demoness and one of the wives of Samael (the devil.)
A masculine version is Naaman - also a biblical name – Naaman was the general of the arum of Aram (circa ninth century BCE), who visited the Prophet Elisha to be cured of leprosy (2 Kings 5: 1).
Naamah is a beautiful Hebrew name. Although I prefer the NAY-ah-mah pronunciation, the original is good too. It's a very unique name and I think it would suit a little girl or a grown woman very well. Just lovely. =)
Naamah is such a gorgeous and magical name. It has a beautiful sound, and something appeals to me about the way it looks, the two "a"s. But I'm afraid people, especially in Ireland (where we don't have Aaliyah), will be thrown by this and pronounce it wrong. I love the actual Hebrew pronunciation - nah-ah-MAH. I find it cool and beautiful.
I have to add to my comment above (I apologise for a double comment), but I think if I were to use this name I'd spell it Na'amah or Naámah, to indicate that the "a"s are pronounced separately.
Naamah or Na'amah is a succubus who bedded Adam and bore him children in the Zohar. She is one of four angels of sacred prostitution, and one of the mates of Samael.