Dato' Raja Kamarul Bahrin Shah bin Raja Ahmad (Jawi: ??? ?????? ????? ??? ?? ??? ????; born 14 January 1955) is a Malaysian politician.
He is the Terengganu state chairman of the National Trust Party (AMANAH) and state chief of the Pakatan Harapan (PH) coalition.
He was the former one-term Member of Parliament for Kuala Terengganu (2013-2018).
Raja Kamarul was appointed as a Senator in the upper house (Dewan Negara) of Parliament of Malaysia and also the Deputy Minister of Housing and Local Government in July 2018.Raja Kamarul Bahrin was appointed as the chairman of the Hotel Association (MAH) and one of the members of the Badan Warisan Malaysia.
He is the chairman of the Independent Non-Governmental Organizations (NGOs) of the Angkatan Amanah Merdeka led by Tengku Razaleigh Hamzah.
He was born on 14 January 1955 at Istana Maziah, Kuala Terengganu.
He is officially listed as the party's candidate at the Kuala Terengganu parliament on 9 April 2013, the 13th general election.
According to various sources, after being inaugurated by Abdul Hadi Awang and the Malaysian Islamic Party Commissioner (PAS) he agreed to join the party over his patriarchal plea.
He is popularly known as the architect of the Tengku Tengah Zaharah Mosque or better known as the Floating Mosque, the Terengganu State Museum (Museum recognized as the largest museum in Asia), Istana Melawati (Putrajaya) and several others.
Around the 1990s was linked in Malaysia when bringing his son back from Australia with a boat, as well as about the collapse of the roof of the Sultan Mizan Zainal Abidin Stadium designed by his company Senibahri Arkitek.
On August 21, 2015, he was declared the chairman of the Terengganu Gerakan Harapan Baru.
He said he accepted the offer to lead the Harapan Baru in Terengganu because he believed in the future of the movement.