Dato' Jamal Ubaidillah bin Haji Mohd Ali, known by his stage name Jamal Abdillah, is a Malaysian pop singer and actor with a "bad boy" image.
Jamal began his singing career in 1973. He won Radio Televisyen Malaysia's Bintang RTM competition in 1979. Following his victory, he continued to sing but also appeared in films such as 'Azura'.
Jamal is the eldest of seven siblings. Having married four times, Jamal has four sons, Osama Yamani, Ahmad Zaki Yamani, El Isaac Yamani, and Iskandar Rayyan Yamani; and three daughters, Nur Azura Yamani, Rahil Laura Salsabila Yamani and Magdalena Yamani.
He is of Banjar descent. He has performed in Indonesia, Singapore and Brunei Darussalam. He regularly performs charity concerts in Singapore every year.