Melissanthi Mahut (Greek: Μελισσάνθη Μάχουτ; born September 20, 1988) is a Canadian and Greek actress. Mahut was born in Toronto, Canada and raised in Greece. Her father is a Quebecois Canadian, while her mother is Greek. She attended the National Theatre of Greece Drama School and later went on to study at the Royal Academy of Dramatic Art (RADA). She graduated at RADA with a BA degree in Acting in 2012.

She is known for her role as Kassandra in Assassin's Creed Odyssey, and for playing Mita Xenakis in the Netflix film Eurovision Song Contest: The Story of Fire Saga.