Date of Birth: 
Place of Birth: Vantaa, Uusimaa, Finland
About Joonas Rönnberg
- Joonas Rönnberg (born February 19, 1983) is a Finnish professional ice hockey defenceman.
- He currently plays for HC Ludwig in Vantaa, Finland.
- He previously played for Sheffield Steelers of the UK's Elite Ice Hockey League (EIHL).Rönnberg made his Swedish Hockey League debut playing with Leksands IF during the 2013–14 SHL season.
- After four seasons with Leksands, Ronnberg left as a free agent to sign a one-year contract in Germany with Düsseldorfer EG of the DEL on May 26, 2015.In June 2017, Rönnberg moved to the UK to sign for EIHL side the Sheffield Steelers on a one-year contract.
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