Amha Iyasus Kidane Kale, better known as Ammehayes (reigned c. 1744 – c. 1775), is a Meridazmach of Shewa, an important Amhara noble of Ethiopia.

He is the son of Kidane Kale, and a sister of Goshu of Amhara.

The Meridazmach makes a diplomatic visit to the Emperor's court at Gondar in 1771, during the first decades of the chaotic Zemene Mesafint ("Era of The Princes"), where the Scots explorer James Bruce meets him.

Calling him "Yasous", Bruce describes Amha Iyasus as "the son of the governor of Shoa", "a man from twenty-six to twenty-eight years of age, tall, and of a just degree of corpulence, with arms and legs finely made; he had a very beautiful face, small features, and the most affable manners."