There is no specific mountain mentioned in the Quran or Islamic tradition as being the first mountain created by Allah.

The Quran does mention mountains being created to stabilize the earth and prevent it from shaking:

* Quran 78:6-7: "Have We not made the earth a resting place? And the mountains as pegs?"

While there's no definitive answer to which mountain was created first, the focus of Islamic scripture is on the purpose and significance of mountains, not their chronological order of creation.