Hmm yes, Allah (the almighty) is eternal.
The Holy Quran said:
“Allah – there is no deity except Him, the Ever-Living, the Sustainer of [all] existence. Neither drowsiness overtakes Him nor sleep. To Him belongs whatever is in the heavens and whatever is on the earth. Who is it that can intercede with Him except by His permission? He knows what is [presently] before them and what will be after them, and they encompass not a thing of His knowledge except for what He wills. His ‘Kursi’ extends over the heavens and the earth, and their preservation tires Him not. And He is the Most High, the Most Great.”-(Quran 2:255).
“Say: He is Allah, the One and Only, ‘Allah-us-Samad’ (The Self-Sufficient Master, Whom all creatures need, He neither eats nor drinks, He is eternal, He is the one who doesn’t have death or end). He neither begets nor is born, And there is none co-equal or comparable unto Him.”-(Quran 112).