Sven Erik Herman Thomas Vikström (born 21 January 1969) is a Swedish singer best known for working with hard rock and heavy metal bands including doom metal band Candlemass (during their initial final years, from 1991 to 1994)[1] and power metallers Stormwind.

He is the son of opera singer Sven-Erik Vikström.

He is also a permanent vocalist for the symphonic metal band Therion.

During 1991 he starred as the main-character in the opera Hoffman's Adventure in Stockholm.

He also played the main part as John in the musical Miss Saigon from late 1997 to December 1998.