Rutger Gunnarsson (February 12, 1946 - May 8, 2015) was a Swedish musician, bass guitarist, guitarist, arranger and producer.

Gunnarsson grew up in Ledberg parish. His career began with Björn Ulvaeus in the Hootenanny Singers. He went on to work with ABBA, playing on all their albums and was on their tours. He later worked on several musicals and musical events, including: Chess, Les Misérables, Rhapsody In Rock, 007, Mamma Mia!, Bananas in Pajamas and Diggiloo. Gunnarsson also arranged strings and played bass for others, including Celine Dion, Westlife, Elton John, Adam Ant and Bobbysocks. He produced and arranged music for artists such as Gwen Stefani, Elin Lanto, Joyride and Alla Pugacheva.