Souzan Alavi is a German voice actress, actress, singer, dancer, and performing arts instructor. She was born in 1978 in Babol, Iran and is based in Hamburg, Germany. She speaks German, English, and Persian.

Alavi began training in classical ballet at her mother's dance school while still in school, completing that training in 1995. She went on to study acting, singing, and dance at the Stage School in Hamburg, graduating with a diploma in 1999. Her career includes significant stage work, including performing as a cast member in the musical Cats in Stuttgart, where she played roles including Victoria, Rumpleteaser, Sillabub, and Tantomile. She has also appeared in television productions such as the ARD daily series Marienhof, where she played Sina Achterberg. Since 2005, she has worked professionally as a voice actress and speaker for dubbing, documentaries, commercials, video games, and audio dramas.

As a voice actress, Alavi is best known for providing the German dubbing voice for the character Natsuki Minamiya across multiple installments of the anime series Strike the Blood. This includes the original Strike the Blood television series, Strike the Blood II, and the Strike the Blood OVAs. The character of Natsuki Minamiya is the wielder of the No. 6 Nata Dagger and serves as the homeroom teacher for the main characters at Saikai Academy. Alavi provides the German voice for this role, matching the performance of the original Japanese voice actress Hisako Kanemoto.

Beyond her work on Strike the Blood, Alavi has a broad portfolio of voice roles in animation, video games, and audio dramas. Her voice-over credits include Dyna Might in the children's series Lalaloopsy, Krakia in Puppy in my Pocket, Zair in Redakai: Die Jagd nach dem Kairu, and Sebi in Gormiti. In video games, she has provided voices for notable titles such as Guild Wars 2, where she played a Sylvari, The Secret World as Nefertari the Younger, End of Nations as Shiva, and Cookie Run: Kingdom as Macaron Cookie. She also voiced the role of Carla in the audio drama series Geisterjäger John Sinclair.

In addition to performing, Alavi is an educator who has taught classical ballet, jazz, and show dance since 2006. In 2015, she founded her own musical school called Fame Academy for children and teenagers in Elmshorn, Germany.