Wadi Qada'ah (Arabic: وادي قداعة, romanized: Wādī Kidā'ah)[2] is a valley or dry river, with intermittent flow, which flows almost exclusively during the rainy season, located about 10 kilometers east of Ras Al Khaimah, United Arab Emirates.

[3][4] Hedgehogs and caracals live in the valley,[5] and dates have been grown at the higher elevations.

[6] In the upper reaches of the Wadi Qada'ah is the historic village of Qada'ah, very close to the border between UAE and Oman, and to the north and northeast of the wadi, rises the impressive southern slope of Jabal Qada'ah,[7] also known as Jabal Al Ahqab,[8] with an elevation of 1,375 m and a prominence of 460 m, making it one of the highest peaks in the UAE.

Accidents involving people who enter areas that are inappropriate for hiking are frequent.

It also appears, with the spelling Wādī Kidā'ah, in the National Atlas of the United Arab Emirates.