Johanna Charlotte Wessels (born 13 May 1987) is a Dutch singer and songwriter. She is best known as the former lead vocalist for the symphonic metal band Delain.

Wessels met Martijn Westerholt in 2004, and was invited to restart Delain in 2005 when it originally was a studio project, becoming the lead vocalist of the band until her departure from the band in 2021. Shortly after she left Delain, she started her solo career that same year with the release of her debut solo album, Tales from Six Feet Under, which was released in September. The following year, she released Tales from Six Feet Under, Vol. II, a follow-up to her debut in October. In 2024, Wessels released her third solo album, The Obsession, in September.