| Birth Name: | Tanja Mirjam Cecilia Koukonen |
| Birth Date: | 1971 9, df=first |
| Birth Place: | Botkyrka, Sweden |
| Occupation: | Actress, dramatist, playwright, screenwriter |
| Years Active: | 1997–present |
| Education: | Bachelor's degree |
| Alma Mater: | Swedish National Academy of Mime and Acting |
Tanja Mirjam Cecilia Lorentzon (née Tanja Mirjam Cecilia Koukonen; born 25 September 1971), previously known as Tanja Svedjeström, is a Sweden-Finnish actress and dramatist of Finnish descent. Internationally, she is probably best known for her role of Sonja Modig in The Girl Who Played with Fire and The Girl Who Kicked the Hornets' Nest, film adaptations of the Millennium series by Stieg Larsson.
Lorentzon was born in Tumba, Stockholm County, Sweden, to Finnish parents. In her youth, Lorentzon worked as an engineer in the Ericsson, Inc., a cleaner and a teacher before entering the Swedish National Academy of Mime and Acting in 1994. She earned her bachelor's degree in 1998.
Lorentzon currently lives in Stockholm with her husband and their three daughters.
In 2010, Lorentzon debuted as a screenwriter with her monologue play Grandmother's Dark Eyes (Swedish: Mormors mörka ögon), in which she played all three characters — herself, her mother and her grandmother. The plays follows lives of . In December 2010, Grandmother's Dark Eyes was broadcast on the STV.[1] The following year, Lorentzon was awarded with the P7 Sisuradio Award for Swedish Finn of the Year for her work on Grandmother's Dark Eyes.[2]
| Title | Original Title | Year | Role | Notes | |
|---|---|---|---|---|---|
| Before the Day | Inna dagen | 1997 | Ana | Short film | |
| Alone at Home | Ensamma hemma | 1998 | Tanja | Short film | |
| Eva & Adam | Eva & Adam | 1999 | Interviewer | TV series; 1 episode | |
| Crime Wave | Brottsvåg | 2000 | Alexandra Melin Fuchs | TV series; 24 episodes | |
| Away / Near | Borta / Nära | 2001 | Sad Woman | Short film | |
| Sidetracked | Villospår | 2001 | Elisabet Carlén | TV film | |
| Outside Your Door | Utanför din dörr | 2002 | Angelica Stjernholm | ||
| Neighbourhood Watch | Grannsamverkan | 2004 | Short film | ||
| Four Shades of Brown | Fyra nyanser av brunt | 2004 | Olle's wife | ||
| My Ex-Family | Min f.d. familj | 2004 | Louise | TV series; 2 episodes | |
| Daddy's Little Fatty | Pappas lilla tjockis | 2005 | Olle's wife | TV film | |
| Lovisa and Carl Michael | Lovisa och Carl Michael | 2005 | Lovisa Bellman | TV film | |
| Darling | Darling | 2007 | Maja | ||
| Brother and Sister | Bror och syster | 2007 | Yvonne | TV series | |
| Maria Wern | Maria Wern | 2008 | Erika | Miniseries; 8 episodes | |
| Wallander | Wallander | 2009 | Helena Landberg | TV series; 1 episode | |
| Summer With Göran — A Midsummer Night Comedy | Sommaren med Göran – En midsommarnattskomedi | 2009 | Anne | ||
| The Girl Who Played with Fire | Flickan som lekte med elden | 2009 | Sonja Modig | ||
| The Girl Who Kicked the Hornets' Nest | Luftslottet som sprängdes | 2009 | Sonja Modig | ||
| Millennium | Millennium | 2010 | Sonja Modig | Miniseries; 4 episodes | |
| Maria Wern — Dreams from Snow | Maria Wern — Drömmar ur snö | 2011 | Erika | Direct-to-video | |
| The Chinese Man | Kinesen | 2011 | Journalist | TV film | |
| Maria Wern — May the Death Sleep | Maria Wern — Må döden sova | 2011 | Erika | Direct-to-video | |
| Maria Wern — Black Butterfly | Maria Wern — Svart fjäril | 2011 | Erika | Direct-to-video | |
| Maria Wern — Boy Missing | Maria Wern — Pojke försvunnen | 2011 | Erika | Direct-to-video | |
| Cockpit | Cockpit | 2012 | nyskild magspecialist |