Howard Sion Jones (born July 20, 1970) is an American metalcore vocalist best known as the former lead singer of Killswitch Engage and Blood Has Been Shed. He is the current vocalist of Light the Torch, formerly known as Devil You Know, and SION with YouTuber/guitarist Jared Dines.
Jones' vocal performances have been described as "emotive and strident", and he has been referred to as "one of metalcore's finest singers". In 2023, Jake Richardson of Loudwire included him in his list of the "10 Best Clean Singers in Metalcore". In 2025, Stephen Andrew Galiher of Vice included him in his list of "4 Metal Vocalists Who Mastered Both Screaming and Singing".
