Lina Qostal (Arabic: لينة قصطال; born 11 March 1997[1]) is a Moroccan tennis player.

Qostal made her WTA Tour debut at the 2013 Grand Prix SAR La Princesse Lalla Meryem, having been awarded a wildcard into both the singles and doubles draws.

She partnered with Alizé Lim in the doubles event but fared no better there, ultimately losing to Sandra Klemenschits and Andreja Klepač in the first round.

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.