Pengiran Aminan bin Pengiran Haji Mahmud (born 9 June 1968) is a Bruneian nobleman and military officer, who previously served as the tenth Commander of the Royal Brunei Armed Forces (RBAF) from 2018 until 2020.

He was previously the ninth Commander of the Royal Brunei Land Force (RBLF).

[2] Pengiran Aminan enlisted with the Royal Brunei Armed Forces (RBAF) on 9 December 1985 and was assigned 286 as his service number.

During his time in service, he was appointed to several positions; which include: infantry platoon commander, technical instructor at Training Institute (TI RBAF), SO2 G1 of Royal Brunei Service Force, SO2 and military assistant to Commander of the RBAF, and senior management officer at the Office of Strategy Management Ministry of Defence (MINDEF).

On 7 February 2014, Aminan began his duty as the acting Deputy Commander of Royal Brunei Land Force (RBLF).