Pengiran Anak Besar (24 September 1928 – 16 October 2016) was the wife of Pengiran Anak Mohammad Alam and the mother of Pengiran Anak Saleha, the queen consort of Hassanal Bolkiah, the 29th Sultan of Brunei. Her full name after her death is Al-Marhumah Yang Teramat Mulia Pengiran Babu Raja Pengiran Anak Hajah Besar binti Pengiran Anak Haji Metassan.

Besar was born on 24 September 1928; her father was Pengiran Anak Metassan.^[1] She married Pengiran Anak Mohammad Alam in 1943.^[1] They had nine children, 37 grandchildren and 26 great-grandchildren.^[1] Their eldest daughter, Pengiran Anak Saleha, married Hassanal Bolkiah, the 29th Sultan of Brunei, who is also her first cousin.^[2] Other children also married members of Brunei's royal family.^[3] She was very active in community and welfare initiatives in Brunei.^[1]

Besar died at 5.45am on 16 October 2016 in the Raja Isteri Pengiran Anak Saleha Hospital in Bandar Seri Begawan.^[1] She is buried in the Kubah Makam Di Raja.^[4]

With the consent of Sultan Hassanal Bolkiah, Pengiran Anak Hajah Besar was granted the title of Pengiran Babu Raja. She also received the following awards;

• Family Order of Laila Utama (DK) – Dato Laila Utama^[1]
• Order of Paduka Seri Laila Jasa Second Class (DSLJ) – Datin Seri Laila Jasa^[1]
• Sultan Hassanal Bolkiah Medal (PHBS)^[1]