Che Puan Besar Kalsom, the Che Puan Besar and stepmother of the Sultan 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 the former Sultanah of Pahang as the second wife of Sultan Haji Ahmad Shah.
She was born on 12 September 1951 in Taftan, Baluchistan, Dominion of Pakistan.
Prior to her marriage, she was an air stewardess for a prominent airline.
She and the Sultan have a son together Tengku Fahad Mua'adzam Shah, the Tengku Arif Temenggong of Pahang.
[4][5] Sultanah Kalsom's style was changed to Cik Puan Besar Hajjah Kalsom Abdullah on 15 August 2019.