Mahiaddin bin Md. Yasin (born 15 May 1947), commonly known as Muhyiddin Yassin, is a Malaysian politician and civil servant who served as the eighth prime minister of Malaysia from 2020 until his resignation in 2021 after losing parliamentary support amid the 2020–2022 political crisis. A president of BERSATU, he represented Pagoh in Dewan Rakyat since 1995 and previously served as the Menteri Besar of Johor from 1986 to 1995.

Born in Johor, Muhyiddin started his career in the state public service after graduating from University of Malaya (UM). He assumed management positions at various state-owned enterprise. In 1978, he was elected as the Member of Parliament for Pagoh. During this term, he was appointed parliamentary secretary to the minister of foreign affairs, deputy minister of federal territories and later deputy minister of trade and industry. As the Johor UMNO chief, he was the state's Menteri Besar from 1986 to 1995. He returned to federal politics in 1995. He was appointed to the Cabinet as Minister of Youth and Sports. He was appointed Minister of Domestic Trade and Consumer Affairs after the 1999 general election and became a vice president of UMNO in 2000. Under the premiership of Abdullah Ahmad Badawi, Muhyiddin served as Minister of Agriculture and Agro-based Industry from 2004 to 2008, and then as Minister of International Trade and Industry from 2008 to 2009.

In 2008, he contested and won the UMNO deputy presidency and was appointed Deputy Prime Minister and Minister of Education by Prime Minister Najib Razak in 2009. As Minister of Education, Muhyiddin ended the use of English as the medium of instruction for science and mathematics in public schools. He also attracted controversy after describing himself as "Malay first" when challenged by the Opposition to pronounce himself as "Malaysian first". Muhyiddin was a vocal critic of his government and party over the 1MDB scandal; as a result, he was dropped from his position during Najib's mid-term cabinet reshuffle in July 2015, marking the first incumbent UMNO deputy president to be left out of the president's cabinet. In June 2016, he was expelled from UMNO.

He participated in founding the political party Malaysian United Indigenous Party (BERSATU) under Mahathir in 2016. He returned to the cabinet after his coalition of parties Pakatan Harapan won the 2018 Malaysian general election. In February 2020, BERSATU withdrew from Pakatan Harapan, culminating in a political crisis as the coalition lost its majority in the Dewan Rakyat. Following Prime Minister Mahathir Mohamad's subsequent resignation, Muhyiddin successfully formed a new coalition Perikatan Nasional by receiving support from enough MPs to form a majority government and was appointed prime minister on 1 March.

Much of his premiership was overseeing Malaysia's response to the COVID-19 pandemic, which became a major crisis shortly after he took office. This included enacting several iterations of the Movement Control Order (MCO), a vaccination programme and declaring a 2021 state of emergency, where parliament and elections were suspended. Although his government's initial response was praised by the WHO and had high local approval ratings, the worsening of the COVID-19 crisis in 2021 attracted criticism and destabilised the coalition. On 16 August 2021, he resigned after attempts to regain support from MPs were unsuccessful. He remained caretaker Prime Minister until his replacement Ismail Sabri Yaakob was selected on 21 August 2021.

Muhyiddin unsuccessfully ran as the prime ministerial candidate for Perikatan Nasional in the 2022 general election. In March 2023, Muhyiddin was arrested by the Malaysian Anti-Corruption Commission as part of a corruption investigation on several counts of money laundering and abuse of power, making him the second former prime minister after Najib Razak to be prosecuted.

Early life and education Muhyiddin was born as Mahiaddin bin Md. Yasin in Muar, Johor, Malaysia. His father, Haji Muhammad Yassin bin Muhammad, was a Malay of Bugis descent. Muhammad Yassin was an Islamic theologian and cleric based in Bandar Maharani, Muar, Johor, while his mother, Hajjah Khadijah binti Kassim, was a Malay of Javanese descent.

Muhyiddin received his primary education at Sekolah Kebangsaan Maharani, Muar, Johor, and Sekolah Kebangsaan Ismail, Muar, Johor. He received his secondary education at the Muar High School, Johor. Subsequently, he attended the University of Malaya, Kuala Lumpur. He received Bachelor of Arts (BA) in Economics and Malay studies in 1971.

Early career After completing his studies, Muhyiddin joined the Johor state public service as the assistant secretary of training and scholarship. In 1974, he was appointed the assistant district officer (ADO) of Muar. He left the civil service to join the corporate sector in the Johor State Economic Development Corporation (PKENJ), managing its subsidiary companies like Sergam Berhad as managing director (1974–1977), Equity Mal (Johore) Sdn Bhd as Director (1974–1978), Sri Saujana Berhad as managing director (1974–1978) and SGS Ates (M) Sdn Bhd as Human Resources Manager (1974).

While in the public service he became senior political aide to Johor Chief Minister Othman Saat.

Early political career (1971–1995)

Early years Muhyiddin's involvement in politics began when he joined UMNO as an ordinary member at the Muar Dalam division in 1971. He was elected as UMNO youth chief of the Pagoh division and the secretary in 1976. Later he became Youth Chief of Johor state UMNO Youth until 1987.

Muhyiddin occupied the seats of Exco in the national Malaysia UMNO Youth. In 1984, Muhyiddin was elected the UMNO division chief of Pagoh, replacing Othman Saat. Muhyiddin rose the ranks and file of Johor UMNO quickly. From being a state executive council member, he rose to become Johor UMNO's head and later became Menteri Besar of Johor.

Muhyiddin contested and was elected Member of Parliament for the Pagoh constituency in the 1978 general election and kept the seat until 1982. Muhyiddin was appointed Parliamentary Secretary in the Ministry for Foreign Affairs; subsequently, he was promoted to Deputy Minister in the Ministry of Federal Territories and later the Ministry of Trade and Industry.

In 1984, Muhyiddin contested a UMNO Supreme Council seat but lost. Muhyiddin was later appointed the UMNO Johor state liaison chairman and next appointed a Supreme Council member. In November 1990, he was a candidate for the UMNO vice-presidency but lost again. He attempted again in the November 1993 UMNO party election, successfully this time.

Rise to prominence (1995–2009)

Muhyiddin returned to contest the Pagoh parliamentary seat in the 1995 General Election.

He served several different federal government cabinet posts as Minister of Youth and Sports (1995–1999), Minister of Domestic Trade and Consumer Affairs (1999–2004), Minister of Agriculture and Agro-based Industry (2004–2008) and Minister of International Trade and Industry (2008–2009).

Muhyiddin was seen as a supporter of Abdullah Ahmad Badawi, and was expected to become Badawi's deputy prime minister when Badawi replaced Mahathir. However, when Badawi became prime minister in November 2003, Najib Razak was appointed deputy.

He lost the 1996 election when defending the vice-president post. Eventually, in the election in 2000, he again won the post of vice-president of UMNO, remaining in that post until the October 2008 party election, when Muhyiddin successfully sought the higher post of deputy president, which was left vacant as the incumbent, Najib Razak (who was acting party president after the retirement of Abdullah Ahmad Badawi), became UMNO president.

2009 UMNO General Assembly and party election Muhyiddin attacked Abdullah Ahmad Badawi's original transition plan as "too long", and some people [who?] say that at one point, Muhyiddin was about to ask and force Abdullah to quit, though he never did so directly. During the 2008 general election, Muhyiddin managed to keep his seat and remained as an UMNO leader. Shocked by the election results, he called for reforms.

During the 2009 UMNO General Assembly and party election, Muhyiddin was a candidate for the deputy president post, which was vacated by the incoming prime minister Najib Tun Razak. He was challenged by Mohd Ali Rustam, Malacca chief minister, and Muhammad Muhammad Taib, Rural and Regional Development Minister. Muhyiddin, seen as a supporter of Mahathir Mohamad, was seen to be the front-runner for the race, garnering many nominations by the UMNO divisions. Nevertheless, the competition was tough, as Taib and Rustam gained more ground, especially from the Badawi camp. Political analysts tipped the race to be very tight. However, the UMNO supreme council decided to disqualify Ali Rustam's candidacy after his assistants were caught involved with corruption after an investigation. The election resulted in Muhyiddin's election to the post with 1,575 votes to Muhammad Taib's 916.

Deputy premiership (2009–2015)

Muhyiddin was appointed deputy prime minister on 9 April 2009, when Najib took over from Abdullah Ahmad Badawi and unveiled his first Cabinet.

Muhyidden was appointed Deputy Prime Minister and Minister of Education by Prime Minister Najib Razak in 2009.

Continuing as Minister for Education, he announced the decision to return to the teaching of mathematics and science in Malay in all government primary and secondary schools."Muhyiddin defends PPSMI decision" , The Malaysian Insider, 21 July 2009.

Muhyiddin waded into controversy in March 2010 by stating he was "Malay first" rather than "Malaysian first". 31 March 2010 He also said that there is nothing wrong with other races doing the same; for example, the Chinese could claim themselves to be "Chinese first, Malaysian second" and same for the Indians. On 13 July 2010, he said that anyone was free to form an association, including Chinese or Indian versions of the Malay rights group Perkasa. Prime Minister Najib came to Muhyiddin's defence, denying that his statement was inconsistent with the "1Malaysia" concept promoted by the government."PM defends Muhyiddin's 'Malay first' statement" , The Star, 2 April 2010.

Sacked from the cabinet During Najib's mid-term Cabinet reshuffle on 28 July 2015, he was dropped from his position as deputy prime minister. The dismissal came after Muhyiddin had made public and critical remarks about Najib's handling of the 1Malaysia Development Berhad scandal. Najib stated that Muhyiddin's dismissal, and the contemporaneous dismissals of other Ministers who had been critical of his leadership, was to create a more "unified team". Muhyiddin remained UMNO deputy president, but after keeping up criticism of UMNO, he was eventually sacked by the party's supreme council in June 2016. Muhyiddin remained unrepentant, maintaining that he had never betrayed the party and pledging to continue speaking out.

Post deputy premiership (2015–2018) Establishment of BERSATU party