Mohamad Ariff Md Yusof

Mohamad Ariff was a member and candidate of the Malaysian Islamic Party (PAS) for Kota Damansara, Selangor in 2004 general election but failed to win. Then he joined National Trust Party (AMANAH), a component party of Pakatan Harapan (PH) coalition in 2015. He resigned all of his party posts and became an independent politician on 1 July 2018 in order to become the PH coalition's candidate for the speakership.

Mohamad Ariff was a high court judge during the 2009 Perak constitutional crisis. He also served as the judge removing the Home Ministry's ban on the book authored by the Sisters in Islam (SIS) entitled Muslim Women and the Challenges of Islamic Extremism. As a Court of Appeal Judge, he led a panel of judges in the case of Teoh Beng Hock, a man killed while in the custody of the Malaysian Anti-Corruption Commission (MACC).

Mohamad Ariff was appointed a Judicial Commissioner for the High Court of Malaya in 2008. He was made a full judge of the same in 2009. In 2012, he was elevated to the Court of Appeal. He retired from the Malaysian Judiciary in 2015 and returned to his prior legal practice, Cheang & Ariff.

Mohamad Ariff joined the Securities Commission Malaysia (SC) and became the first Market Supervision Department Director from 1993 to 1995. From 1995 to 1996, he served as a Director of Kuala Lumpur Options and Super Exchange (KLOSE). He served as a member of the advisory board of Company's Commission of Malaysia from 2007 to 2008. He also was a member of the Rating Review Committee and Malaysian Rating Agency until 2008.

Mohamad Ariff joined the Faculty of Law in University of Malaya once he graduated from LSE. In 1986, he became an advocate and a solicitor at his own legal practice called Cheang & Ariff.

Tan Sri Dato' Mohamad Ariff bin Md Yusof (Jawi: محمد عارف بن مد يوسف; born 1949) is a Malaysian politician who served as the 9th Speaker of the Dewan Rakyat, the lower chamber of the Parliament of Malaysia from July 2018 to his removal from speakership in July 2020. He is a member of the National Trust Party (AMANAH), a component party of the Pakatan Harapan (PH) opposition coalition. He resigned from all AMANAH party positions but not membership to become more impartial after being appointed to the Dewan Rakyat speakership. Therefore, he remains an AMANAH ordinary member.

Mohamad Ariff was born in Sungai Petani, Kedah in 1949. He graduated from the London School of Economics (LSE) with a Bachelor's degree in law.