Che Puan Besar Hajjah Kalsom Abdullah (Jawi: ÃÂæ äÃÂçàèóñ ÃÂçìàÃÂÃÂëÃÂàùèïçÃÂÃÂÃÂ), 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.
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.
She has been the patron of the Kiwanis Club of Kuantan since 2004.
Sultanah Kalsom's style was changed to Cik Puan Besar Hajjah Kalsom Abdullah on 15 August 2019, following the death of Sultan Haji Ahmad Shah in May 2019.