Johnsson is a Swedish surname meaning "son of John". Notable people with this surname include:

• Andreas Johnsson, Swedish ice hockey player
• Christofer Johnsson, Swedish heavy metal musician
• Helén Johnsson (born 1976), Swedish ten-pin bowler
• Kim Johnsson, Swedish ice hockey player
• Peter Johnsson (born 1962), Swedish politician
• Sonja Johnsson, Swedish Swimmer
• William G. Johnsson, former editor of the Adventist Review