Che Puan Besar Kalsom Abdullah
| Kalsom كلثوم | |
|---|---|
| Che Puan Besar of Pahang | |
| Tenure | 15 August 2019 – present | 
| Predecessor | Tengku Ampuan Besar Raja Fatimah (as Tengku Ampuan Besar) | 
| Sultanah of Pahang | |
| Tenure | 30 September 1992 – 11 January 2019 | 
| Predecessor | Tengku Ampuan Afzan (as Tengku Ampuan) | 
| Successor | Tengku Ampuan Azizah Aminah Maimunah Iskandariah (as Tengku Ampuan) | 
| Born | 12 September 1951 Taftan, Baluchistan, Dominion of Pakistan | 
| Spouse | |
| Issue | Tengku Fahad Mua'adzam Shah | 
| Religion | Sunni Islam | 
| 
 Che Puan Besar Kalsom, the Che Puan Besar and stepmother of the Sultan 
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Che Puan Besar Hajjah Kalsom Abdullah (Jawi: چئ ڤوان بسر حاجه كلثوم عبدالله), formerly known as Sultanah Kalsom (née Anita; born 12 September 1951 in Taftan, Baluchistan, Dominion of Pakistan) is a former Sultanah of Pahang as the second wife of Sultan Haji Ahmad Shah. She is of Persian and Pakistani descent.