Alirupendi bin Haji Perudin (born June 1973) is a Bruneian civil servant and retired military officer who served as the Permanent Secretary, Ministry of Defence (MINDEF) since 2023.

[2][5] On 2 May, Ikmal Hisham Abdul Aziz and Brigadier General Alirupendi paid a two-day working visit to Malaysia Battalion (MALBATT) 850–9 at UNP 2-1 Marakah Camp, South Lebanon.

[8][9] After a 13-month deployment with UNIFIL, thirty RBAF personnel from MALBATT 850-9 were welcomed back to Brunei by Dato Alirupendi at a ceremony on 13 December 2022.

[12][2] Later on 25 October, Secretary of Defence, Hamood Uz Zaman Khan, and Dato Alirupendi sign the Memorandum of Understanding (MoU).

[13] On 7 December 2023, Lieutenant General Stephen Sklenka welcomed Dato Alirupendi to USINDOPACOM headquarters for the 16th Joint Defence Working Committee meeting and the Section 505 Agreement signing.

[14] Following a delegation of senior officials from MINDEF's visit to the Department of National Defense (DND) headquarters at Camp Aguinaldo on 19 June 2024, the Philippines reiterated its dedication to fortifying bilateral defence relationships with Brunei.