| Abdul Jalilul Akbar Malay: {{Script|Arab|عبد الجليل الأكبر | |
| Succession: | Sultan of Brunei |
| Reign: | 1598–1659 |
| Predecessor: | Muhammad Hasan |
| Successor: | Abdul Jalilul Jabbar |
| Spouse: | Radin Mas Ayu Siti Aishah |
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| Full Name: | Abdul Jalilul Akbar ibnu Muhammad Hasan |
| Regnal Name: | Sultan Abdul Jalilul Akbar ibnu Al-Marhum Sultan Muhammad Hasan |
| House: | Bolkiah |
| Father: | Muhammad Hassan |
| Birth Name: | Abdul Jalilul Akbar ibnu Muhammad Hasan |
| Death Date: | 1659 |
| Religion: | Sunni Islam |
Abdul Jalilul Akbar ibnu Muhammad Hasan (Jawi: ; died 1659),[1] also known as Marhum Tua, was the eleventh Sultan of Brunei.[2] Reigning for 61 years from 1598 until 1659, Abdul Jalilul Akbar is the longest reigning Sultan of Brunei to date.
According to Jamil Al-Sufri's Tersilah Brunei, he was quoted being a wise ruler and quick to understand antics of his brother, Ibrahim Ali Omar Shah. Through his rule, Brunei saw the strengthening of ties between the Spanish Empire, which was heavily affected by the Castilian War. Moreover, it was only during his reign where the Sultan Hasan's Canons (Syariah Penal Code) were fully implemented and used.[3]
Prior to ascending to the throne, he was known as Raja Tua Abdul Jalil. He was the eldest son of his father, Sultan Muhammad Hasan, therefore making him the successor to the throne in 1598. When he ascended to the throne, his uncle Pengiran Di-Gadong Sahibul Mal Besar Oman acted as his regent. Ever since the conflict between several malay sultanates including Brunei and the Spanish Empire, he established and improved ties with the Spaniards at Manila in 1599. Additionally, a peace treaty was signed by both parties and to facilitate trade between Brunei and the Philippines.[4]
It was during his reign when a Dutch trader named Oliver Van Noort visited Brunei from December 1600 to January 1601, followed by a group of English businessmen led by Sir Hendry Middleton as part of his voyage to the East Indies in 1612.[5] [6] Olivier van Noort did not mention the name of the ruling sultan at that time, but managed to describe that the Brunei sultan was under the guardianship of his uncle who acted as his regent.[7] The Sultan of Brunei wrote a letter to the Governor-General of the Netherlands East Indies in 1654. Paduka Sri Sultan Ilmu Alam was the name and title's Dutch transliteration. This could refer to Jalilul Alam, a name that appears in the list of titles for legitimate reigns in the Silsilah Raja-Raja Brunei. It was during the Dutchman's visit to Brunei, where the Dutch began establishing trading centers in the island of Borneo.[8]
Sultan Abdul Jalilul Akbar was married three times, with his second wife being Radin Mas Ayu Siti Aishah binti Pengiran (Kiyai) Temenggong Manchu Negoro Gerisik.[9] He had a total of 8 children and those known were:
In 1599, Sultan Abdul Jalilul Akbar named his brother, Pengiran Raja Tengah Ibrahim Ali Omar Shah as the first Sultan of Sarawak.[12] Tradition has it that after Sultan Ibrahim Ali Omar Shah died in 1641, no sultan was chosen, and Sarawak was governed by four local datu until the first White Rajah arrived in 1842. He was frequently identified as Sultan Abdul Jalilul Akbar's son or grandchild. But, Sambas' sources provided his son, Radin Sulaiman's exact birthdate, which was 14 April 1601. This made it difficult for Raja Tengah Ibrahim and Sultan Abdul Jalilul Akbar to have a relationship of this kind. The latter did have a son who was known as Raja Tengah, but Sultan Abdul Jalilul Jabbar was the name given to the prince who succeeded him.[13]
Sultan Abdul Jalilul Akbar passed away after ruling the sultanate for 61 years in 1659. After his death, he was known as Marhum Tua.[6] [14]
Five history books, including Sultan Abdul Jalilul Akbar: Marhum Tua, will be released by the Curriculum Development Department (CDD) under the Ministry of Education (MoE) in an effort to help primary school pupils gain a deeper understanding of Brunei's former sultans and queens. The books are anticipated to be released by the end of 2016 and will be provided to all government elementary schools in Brunei, according to Haji Abdul Rahman bin Haji Nawi, director of CDD.[15]