| Jónsson, Þorbjörn | Þorbjörn Jónsson | Actor | 1975 | 1 | |
| Jónsson, Þórarinn, | Þórarinn Jónsson | Actor | 1908 | 1 | |
| Jónsson, Stefán | Stefán Jónsson | Actor | 1944 | 1 | |
| Jónsson, Stefán | Stefán Jónsson | Actor | 1971 | 2 | |
| Jonsson, Sören | Sören Jonsson | Actor | 1988 – 1989 | 1 | |
| Jónsson, Sigurður | Sigurður Jónsson | Actor | 1928 | 1 | |
| Jonsson, Per, A. | Per A. Jonsson | Costume Designer, Designer | 1978 – 1991 | 23 | |
| Jonsson, Per | Per Jonsson | Actor, Designer | 1972 – 1996 | 10 | |
| Jónsson, Pálmi, | Pálmi Jónsson | Actor | 1923 | 1 | |
| Jonsson, Mattias | Mattias Jonsson | Lighting Designer | 2003 | 1 | |
| Jónsson, Kristján Jóhann | Kristján Jóhann Jónsson | Translator | 1996 | 1 | |
| Jónsson, Klemens | Klemens Jónsson | Actor | 1954 | 4 | |
| Jönsson, Kjell | Kjell Jönsson | Actor | 1960 | 1 | |
| Jönsson, Karl, | Karl Jönsson | Actor | 1903 | 3 | |
| Jönsson, Karl | Karl Jönsson | Actor, Musician | 2001 | 3 | |
| Jónsson, Jónas H., | Jónas H. Jónsson (Jónas H. Jónsson) | Actor | 1908 | 1 | |
| Jónsson, Hilmar | Hilmar Jónsson | Actor | 1991 | 2 | |
| Jonsson, Helén | Helén Jonsson | Composer | 2002 – 2003 | 3 | |
| Jönsson, Gun | Gun Jönsson | Director, Translator | 1971 | 2 | |
| Jónsson, Guðbrandur | Guðbrandur Jónsson | Translator | 1928 | 1 | |
| Jónsson, Gísli Rúnar, | Gísli Rúnar Jónsson | Actor | 1908 | 2 | |
| Jonsson, Emelie | Emelie Jonsson | Actor | 2016 | 1 | |
| Jonsson, Christine | Christine Jonsson | Actor | 2011 | 4 | |
| Jönsson, Carl, | Carl Jönsson | Actor, Director | 1911 | 2 | |
| Jonsson, Carina | Carina Jonsson | Actor | 1971 | 1 | |
| Jonsson, Busk, Margit | Busk Margit Jonsson | Actor | 1955 | 2 | |
| Jónsson, Bjarni | Bjarni Jónsson | Dramaturg, Translator | 2011 | 2 | |
| Jónsson, Arnar | Arnar Jónsson | Actor, Dancer | 1962 | 3 | |
| Jonsson, -, | - Jonsson | Actor | 1920 | 2 | |
| Jönsson Lunde, Evalena | Evalena Jönsson Lunde | Costume Designer | 2005 | 1 | |
| Jonsrud, Beth | Beth Jonsrud | Actor | 1960 – 1961 | 103 | |
| Jonsrud, Aurora, | Aurora Jonsrud | Actor | 2013 | 1 | |
| Jonson, Sarah | Sarah Jonson | Actor | 1913 | 3 | |
| Jonson, Asa | Asa Jonson | Actor | 2018 | 1 | |
| Jonson, Anders, | Anders Jonson | Actor | 1913 | 1 | |
| Jónsdóttir, Pálína | Pálína Jónsdóttir | Actor | 1998 | 1 | |
| Jónsdóttir, Ólafía Hrönn | Ólafía Hrönn Jónsdóttir | Actor | 1991 – 2008 | 7 | |
| Jónsdóttir, Nina | Nina Jónsdóttir | Actor | 1932 | 1 | |
| Jónsdóttir, Jóna Guðrún | Jóna Guðrún Jónsdóttir | Actor | 1993 | 1 | |
| Jónsdóttir, Ingrid | Ingrid Jónsdóttir | Actor | 1993 | 1 | |
| Jónsdóttir, Edda | Edda Jónsdóttir | Actor | 1978 | 1 | |
| Jonker, Thera | Thera Jonker | Adaptation, Dramaturg | 1994 | 2 | |
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