Other
- Knutsen & Ludvigsen, Norwegian singing duo having written and performed various songs for children
- Knutsen & Ludvigsens Beste, greatest hits album by Knutsen & Ludvigsen, covering 22 songs from 1970 to 1988
- Knutsen & Ludvigsens Ver'ste', compilation album by Knutsen & Ludvigsen, covering 20 songs from 1970 to 1997
- MT Sidsel Knutsen, Norwegian oil tanker built in 1993
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