Ajami ibn Abubakr Nakhchivani was a 12th and 13th-century Muslim architect who contributed greatly to the architecture of Nakhchivan.

One of the ancient monuments created by Ajami is the mausoleum of Yusif ibn Kuseyir, known as "Atababa".

This eight-sided mausoleum consists of the underground plinth burial place (sardaba, Persian: سردابه or cellar) and its on-ground top.

The mausoleum is constructed in honour of Momine Khatun who was the wife of either Atabag Shamsaddin Eldegiz himself, or that of his son Jahan Pahlavan.

[2] One of those creations of Ajami, which partially survived up to present day, is an architectural ensemble near the Momina Khatun Mausoleum.