| Consort: | yes |
| Najihah Malay: {{Script|Arab|ناجحة | |
| Succession: | Raja Permaisuri Agong X |
| Reign: | 26 April 1994 – 25 April 1999 |
| Coronation: | 22 September 1994 |
| Cor-Type: | Malaysia |
| Predecessor: | Tuanku Bainun |
| Successor: | Tuanku Siti Aishah |
| Succession1: | Tunku Ampuan Besar of Negeri Sembilan |
| Reign1: | 18 April 1967 – 27 December 2008 |
| Coronation1: | 8 April 1968 |
| Cor-Type1: | Installation |
| Predecessor1: | Tunku Ampuan Durah |
| Successor1: | Tuanku Aishah Rohani |
| Succession2: | 1st Chancellor Universiti Sains Islam Malaysia |
| Reign2: | 2003 - 2 December 2011 |
| Successor2: | Tuanku Aishah Rohani |
| Issue: | Tunku Naquiah Tunku Naquiyuddin Tunku Imran Tunku Jawahir Tunku Irinah Tunku Nadzaruddin |
| Dynasty: | Pagaruyung |
| Full Name: | Tunku Najihah binti Almarhum Tunku Besar Burhanuddin |
| Regnal Name: | Tuanku Najihah (as Queen consort) Tunku Ampuan Najihah (as Queen dowager) |
| Father: | Tunku Besar Burhanuddin ibni Almarhum Tuanku Antah |
| Mother: | Cik Halija binti Haji Umar |
| Birth Name: | Tunku Najihah binti Tunku Burhanuddin |
| Birth Date: | 1 September 1923 |
| Birth Place: | Seri Menanti, Negeri Sembilan, Federated Malay States |
| Death Place: | Cardiac Vascular Sentral Hospital, Kuala Lumpur, Malaysia |
| Burial Date: | 8 September 2023 |
| Burial Place: | Seri Menanti Royal Mausoleum, Kuala Pilah, Negeri Sembilan |
| Religion: | Sunni Islam |
Tunku Ampuan Najihah binti Almarhum Tunku Besar Burhanuddin (Jawi: Malay: تونكو امڤوان ناجحة بنت المرحوم تونكو بسر برهان الدين; 1 September 1923 – 8 September 2023) was the Tunku Ampuan (Queen Dowager)[1] of Negeri Sembilan. She was formerly the Tunku Ampuan Besar or Queen consort of Negeri Sembilan from 1967 to 2008. She also served as Raja Permaisuri Agong of Malaysia between 1994 and 1999.
Tuanku Najihah was married to the former Yang di-Pertuan Besar Negeri Sembilan Tuanku Jaafar ibni Almarhum Tuanku Abdul Rahman. Tuanku Jaafar is also the stepson of Tuanku Najihah's sister, Tunku Kurshiah binti Almarhum Tunku Besar Burhanuddin, who also served as Tunku Ampuan Besar. Tuanku Najihah succeeded her sister, Tunku Ampuan Durah as Tunku Ampuan Besar in 1967.
Daughter of Tunku Besar Burhanuddin ibni Almarhum Tuanku Antah (sometime Regent of Negeri Sembilan) and born on 1 September 1923, Tuanku Najihah received her formal education at the Tuanku Muhammad School in Kuala Pilah, Negeri Sembilan. She graduated from the London School of Oriental Studies. She also attended the special language and training course provided for the wives of diplomats while Tuanku Ja’afar was pursuing a course in diplomatic services in London.
Tuanku Najihah was made a committee member of the Associated Country Women of the World. She was the patron of various women's organizations such as the Girl Guides of Negeri Sembilan, the Islamic Women's Welfare Council and the Women's Institute.
She was also the president of the Tuanku Ampuan Badminton Team, the Patron of the Malaysian Women's Hockey Team, Malaysian Women's Football Team, Malaysian Women's Golf Team and the Malaysian Women's Golf Association (MALGA).
She also served as the first Chancellor of Universiti Sains Islam Malaysia.
The royal couple had three sons and three daughters :
Tuanku Najihah died at the Cardiac Vascular Central Hospital in Kuala Lumpur, Malaysia on 8 September 2023, one week after celebrating her 100th birthday.[2] Her remains were laid to rest at Seri Menanti Royal Mausoleum and buried next to her husband Almarhum Tuanku Ja'afar, who died in 2008.[3]
See also: List of honours of the Negeri Sembilan Royal Family by country.
Several places were named after her, including:
