Giana Mohamed Farouk Lotfy (; born 10 December 1994) is an Egyptian karateka. She won one of the bronze medals in the women's 61kg event at the 2020 Summer Olympics held in Tokyo, Japan. She is a two-time gold medalist in the women's kumite 61 kg event at the World Karate Championships. She is also a gold medalist in her event at the African Games, the Islamic Solidarity Games and the Mediterranean Games.
She won the gold medal in the women's 61kg event at the 2016 World University Karate Championships held in Braga, Portugal.
In 2018, she won the silver medal in the women's kumite 61 kg event at the Mediterranean Games held in Tarragona, Spain. In that same year, she won one of the bronze medals in the women's kumite 61 kg event at the 2018 World Karate Championships held in Madrid, Spain.
She won the gold medal in her event at the 2019 African Karate Championships held in Gaborone, Botswana. She represented Egypt at the 2019 African Games held in Rabat, Morocco and she won one of the bronze medals in the women's kumite 61kg event.
She represented Egypt at the 2020 Summer Olympics in karate. She won one of the bronze medals in the women's 61kg event.