Lina Qostal (Arabic: لينة قصطال; born 11 March 1997) is a Moroccan tennis player. Qostal has won one doubles title on the ITF tour in her career. On 19 May 2014, she reached her best singles ranking of world number 1165. On 10 November 2014, she peaked at world number 792 in the doubles rankings. Qostal was born in Rabat. In 2018 she graduated from the University of Pennsylvania, where she was enrolled in the College of Arts and Sciences, and was a member of the women's varsity tennis team. Qostal previously studied at Lycée Descartes in the capital city of Morocco, Rabat.