In thisMalay name, there is nosurname or family name. The nameHassanal Bolkiah is apatronymic, and the person should be referred to by theirgiven name,Abdul Mateen. The word "bin/ibn" or "binti"/"binte" means 'son of' or 'daughter of', respectively.
He was raised and continues to reside at Istana Nurul Izzah inKampong Jerudong, Brunei.[5][6] The palace was built in the mid-1980s for the then Princess Consort Mariam and her children.[7]
Prince Mateen began his military career by following in his father's footsteps.[12] He enrolled in the 44 week Regular Commissioning Course atRoyal Military Academy Sandhurst along with over 200 other recruits on 9 May 2010.[13] Prince Mateen graduated and participated in the 102ndSovereign's Parade on 15 April 2011. Upon completion of the course, he was promoted to the rank ofSecond Lieutenant.[14]
On 28 April 2017, Prince Mateen completed a seven month Elementary Flying Training course on aGrob G 115 aircraft atRAF Cranwell.[17] He was promoted toCaptain in theRoyal Brunei Air Force on 9 May 2017 after serving as an acting captain since 9 May 2016.[18]
From September 2017 to March 2018, Prince Mateen completed the Single Engine Rotary Wing training at theDefence Helicopter Flying School atRAF Shawbury. He qualified as a helicopter pilot while training onSquirrel HT1/2 andGriffin HT1 helicopters.[19] The Sultan presented Prince Mateen with hisAircrew Flying Badge (wings) at his graduation ceremony on 28 March 2018.[20] In September he underwent Helicopter Underwater Escape Training at the Megamas Training Company[21] and in November he completed the first stage of his training on theS-70i Black Hawk helicopter atCAE Brunei Multi-Purpose Training Centre.[22]
On 30 June 2019, the Sultan presented Prince Mateen with honorary membership in the Special Forces Regiment as part of the celebrations honoring the 58th anniversary of theRoyal Brunei Armed Forces.[23] That same year, he completed the Basic Airborne Static Line and Basic Military Freefall training which qualifies him to perform jumps from aircraft[24] and he underwent Aviation Physiology Training at Singapore Aeromedical Centre.[17]
On 20 May 2021, Prince Mateen was promoted to the rank ofMajor in the RBAF.[25] Later that year, Prince Mateen underwent theAll Arms Commando Course at theCommando Training Centre Royal Marines in the United Kingdom for eleven weeks from September to December and was one of the top ten in the course.[26] He received hisGreen Beret at the graduation ceremony on 4 December 2021 which was presented by his father, Sultan Hassanal Bolkiah.[27]
From September 2024 to July 2025, Prince Mateen completed theAdvanced Command and Staff Course at theDefence Academy of the United Kingdom.[30] On July 18th, the Sultan attended his graduation ceremony and presented him with the Pass Staff College Certificate and the Cormorant Pin, which is awarded to international course members.[31] On 6 November 2025, Prince Mateen was promoted to the rank ofLieutenant Colonel in the RBAF.[32][33]
Following leaders' bilateral meetings inAmman on 4 October 2018, which saw the signing of threememorandum of understanding in the areas of infrastructure, tourism, and defense in addition to a customs cooperation agreement, Brunei and Jordan reaffirmed their longstanding alliance. The negotiations were held at Al-Husseinieh Palace with participation from senior cabinet members from both nations as well as Prince Mateen and Crown PrinceAl Hussein.[34] Later on 19 October, alongside his father, he attended the 12thAsia–Europe Meeting (ASEM) inBrussels, where Brunei demanded that talks to get back up aFree Trade Agreement (FTA) between theEuropean Union (EU) andASEAN.[35]
From 13 to 14 March 2023, Prince Mateen took part in a comprehensive tour of theCoronado,California-basedNaval Special Warfare (NSW) commands. He met with members of NSW andRear AdmiralKeith B. Davids, chief ofNavy Special Warfare Command, to talk about potential areas of future cooperation. A description of the human performance program atNSWG-1 was also given to him. The program employs a holistic approach to coordinate resources for the best performance and recovery. It includes strength and conditioning training, sports medicine, performance psychology, performance nutrition, and research and technologies related to human performance.[39]Once again along with his father, he went to the signing of the marriage contract, the royal solemnization ceremony, and the feast and celebration held in honour ofPrince Al Hussein bin Abdullah II andRajwa Khalid Alseif's royal wedding on 1 June.[40]
Prince Mateen has represented his country inpolo at the2017 and2019 Southeast Asian Games.[41] Nearly 3,000 spectators came to watch the polo game between Brunei andMalaysia during the 2017 SEA Games, with notably him and his sister,Princess Azemah facing off Malaysian MinisterKhairy Jamaluddin.[42][43] The 48° Torneo Internacional de Polo concluded at Santa María Polo Club in 2019 with the season's highlight event as the high goal Gold Cup final, which saw his team, MB Polo, win the coveted championship for the first time.[44]
On 7 April 2007, the AM Gunnerscaptained by Abdul Mateen ended in a 1–1 draw against team Projek Ikan Pusu (PIP) during aCharity football match. The match which took place at theHassanal Bolkiah National Stadium collected a total ofB$12,192.[45] A charity match between Mateen-led AM Gunners and Sport School was again held at the same location on 22 March 2008.[46]
Mateen and Anisha during the street parade following their wedding in 2024
On 8 October 2023, the royal court announced the engagement of Prince Mateen andAnisha Rosnah binti Adam also known prior to her marriage as Anisha Isa-Kalebic.[47] The couple have known each other since they were children[48] and are said to have begun dating in 2018.[49] Anisha has attended several events over the years as Prince Mateen's partner such as hisGreen beret presentation in 2021,[50]Princess Fadzilah's wedding in 2022,[51] andPrincess Azemah's wedding in 2023.[52]
His full title and style isDuli Yang Teramat Mulia Paduka Seri Pengiran Muda 'Abdul Mateen ibni Sultan Haji Hassanal Bolkiah Mu'izzaddin Waddaulah, Pengiran Muda dari Brunei Darussalam[66] It is usually translated in English asHis Royal Highness Prince Abdul Mateen of Brunei.[39][67]