Sardar Ataullah Khan Mengal (Urdu: سردار عطااللہ خان مینگل), popularly known as Sardar Ataullah Mengal, is a well known political and feudal lord of Pakistan hailing from Balochistan. He has been campaigning a nationalist and separatist movement in Pakistan for over four decades. He is the head of the Mengal tribe. He was born in 1929 in Wadh, and became the first Chief Minister of Balochistan during Zulfikar Ali Bhutto's premiership from May 1, 1972 to February 13, 1973.

It was reported that Sardar Ataullah Khan Mengal is one of many candidates considered for the position of President of Pakistan after the resignation of Pervez Musharraf.