| | | | Part 1 |
| 1 | Carl Mikael | Blomkvist | Protagonist.
Political and financial reporter. Aka: Kalle, Micke. |
| | | | Donald Duck Gang - bank robbers that Mikael exposed. |
| | Astrid | Lindgren | An author of Children's detective books. |
| | Hans-Erik | Wennerstrom | Financier. |
| | William | Borg | Mikael's former workmate as cub reporter. Wennerstrom's PR. |
| | Bertil | Camnermaker | Wennerstrom's lawyer. |
| | Robert | Lindberg | Mikael's old friend. |
| | | | Wennerstrom-gruppen - The Wennerstrom Group. |
| | Jan | Stenbeck | A businessman. |
| | Percy | Barnevik | Chairman of ASEA Brown Boveri. |
| | | | Minos - Wennerstrom's packaging company. |
| 2 | Dragan | Armansky | A financial director. The CEO and COO of Milton Security. |
| | | | Milton Security - a competent & trusted security firm. |
| | Lisbeth | Salander | Armansky's star researcher colleague. Protagonist. |
| | Holger | Palmgren | Semi-retired lawyer. Salander's former trustee. |
| | Dirch | Frode | A lawyer. Henrik Vanger's attorney. |
| | Kurt | Blomkvist | Mikael's father. |
| | Anita | Blomkvist | Mikael's mother. |
| | Annika | B. Giannini | Mikael's sister. |
| | Pippi | Longstocking | A fictional character. |
| | Monica | Abrahamsson | Mikael's former wife. |
| | Pernilla | Abrahamsson | Monica and Mikael's daughter. |
| | Erika | Berger | Editor-in-Chief of Millenium Magazine. Aka: Ricky. |
| | Greger | Beckman | An artist. Erika's husband. |
| 3 | Janne | Dahlman | The Millenium's managing director. |
| | Christer | Malm | An art director and designer of Millenium. |
| | Gosta | Bohman | Finance Minister. A Swedish Politician. |
| | Thonbjorn | Falldin | A possibly Swedish Prime Minister. |
| | Olof | Palme | Former Prime Minister of Sweden. |
| | Arnold | Magnusson | An actor with a background at the royal dramatic theatre. |
| 4 | Karl Alvar | Nilsson | A writer. |
| | Henrik | Vanger | Former Head of Vanger's Corporation. Mikael's client. |
| | Martin | Vanger | The CEO of the Vanger Corporation. Harriet's brother. |
| | Anna | Nygren | Henrik's nursemaid. |
| | Harrie Ulrika | Vanger | Richard's granddaughter. Missing. |
| | Richard | Vanger | Henrik's brother. |
| | Erlander | | The Swedish Prime Minister. |
| | Birger | Furugard | A Veterinarian. |
| | | | SFBO - The Swedish Fascist Battle
Organization. |
| | Margareta | | Richard's former lover. |
| | Gottfried | Vanger | Richard and Margareta's son. Martin and Harriet's father. |
| | Isabella | K. Vanger | Harriet and Martin's mother. Gottfried's wife. |
| 5 | Gustav | Aronsson | The brother of a farmer at Ostergarden. |
| | Harald | Vanger | Henrik's older brother. |
| | Magnus | Nilsson | One of Henrik's former workers. |
| | Sixten | Nordlander | A sawmill worker. |
| | Jerker | ARonsson | Gustav's nephew. |
| | Otto | Falk | The Hedeby's pastor. |
| 6 | Plague | | One of Salander's hacker associates. |
| | | | Part 2 |
| 8 | Gunnar | Nilsson | Magnus's son. |
| | Helena | Nilsson | Gunnar's wife. |
| | Eugen | Norman | The painter. |
| | Cecilia | Vanger | Harald's daughter. Mikael's lover. |
| | Gerda | Vanger | Greger's widow. |
| | Greger | Vanger | Gerda's husband. |
| | Alexander | Vanger | Greger and Gerda's son. |
| | Binger | Vanger | Harald's son. Anita and Cecilia's brother. |
| | Susanne | | Owner of a bridge café in Hedeby Island. |
| | Ryttinger | | A police officer. |
| | Gustaf | Morell | A detective inspector on Harriet's missing incident. |
| | Ulrika | | Henrik's mother. |
| | Anita | Vanger | Harald's daughter. |
| 9 | Jesper | Loderman | A physician that Palmgren cross-examined. |
| | Nils Erik | Bjurman | Palmgren's predecessor. Salander's abusive trustee. |
| | Alexandre | Vangersaad | The Vanger's ancestor. |
| | Johan | Vanger | Birger's son. |
| | Fredrik | Vanger | Birger's son. Henrick's father. |
| | Gideon | Vanger | Birger's son. |
| | Sofia | Vanger | Johan's daughter. |
| | Ingrid | Vanger | Johan's daughter. |
| | Marit | Vanger | Johan's daughter. |
| | Gustav | Vanger | Henrik's brother. |
| | Gunnar | Karlman | The editor-in-chief of the
Hedestad Courier. Ingrid Vanger's son. |
| | Hermann | Lobach | Harald's chaperone and mentor. |
| | Edith | Lobach | Hermann's daughter. Henrik's former wife. |
| | Oskar | Granath | A ship captain. |
| 10 | Eva | Hassel | Martin's lover. |
| | Magnus | Sjogren | Henrik's cousin. |
| | Sara | Sjogren | Sofia's daughter. |
| 11 | Anders | Toresson | A roofer who puts a tiled roof on the school which Harriet attended. |
| | Monica | Toresson | Anders's wife. |
| | Jonas | Toresson | Anders and Monica's son. |
| | Peter | Toresson | Anders and Monica's son. |
| | Roland | Jacobsson | Harriet's former schoolmate. |
| 12 | David | Gustavsson | Salander's former bully schoolmate. |
| | Cilla | Noren | Salander's friend who introduced her to Evil Fingers. |
| | | | Evil Fingers - A group of teen girls rock band. |
| 13 | Elena | | Nils's former wife. |
| | Jerry | Karlsson | Cecilia's former husband. |
| | | | Part 3 |
| 15 | Peter | Sarowsky | A Polish Exile. Mikael's friend. |
| 16 | Inger | Stenberg | Harriet's friend. |
| | Madeleine | Blomberh | The Pictures Editor of the Hedestad Courier. |
| | Kurt | Nylund | The Hedestad Courier's photographer. |
| 17 | Peter | Samuelsson | Financial assistant at Vanger Corp. Took Cecilia's virginity. |
| | Rebecka | Jacobsson | A girl who was murdered in Hedeby Island. Deceased. |
| 18 | Mimmi | | Salander's friend. |
| | Sonny | MAgnusson | The Millenium's most succesful advertising salesman. |
| | Monika | Nillson | An experienced general reporter in Millenium. |
| | Henry | Cortez | The youngest editorial staff in Millenium. |
| 19 | Magda Lovisa | Sjoberg | A girl who was mysteriously murdered. |
| | Holger | Sjoberg | Magda's husband. |
| | Burman | | A former foreman at Norsjo Carpentry. |
| | Henning | Forsman | A retired master carpenter. |
| | Mildred | Berggren | Gunnar's former wife. The girl in the picture the day Harriet vanished. |
| | Gunnar | Brannlund | Mildred's former husband. |
| | Rakel | Lunde | A girl who was murdered in Landskrona. |
| | Lea | Persson | A prostitue who was murdered. Deceased. |
| 20 | Conny | Torsson | A man who works at Hedestad Courier. |
| | Liv | Gustavsson | A possible link to Harriet's hand book list. Deceased. |
| | Sara | Witt | A possible link to Harriet's hand book list. Deceased. |
| Lena |
Andersson | A possible link to Harriet's hand book list. Deceased. |
| 25 | Trinity | | One of Salander's hacker associates. |
| | Bob | The Dog | Trinity's partner. |
| 26 | Jeremy |
Cochran | Founder of Cochran Farm. |
| | Jeff | Cochran | The studs manager at Cochran Farm. |
| | Spencer | Cochran | Harriet Vanger's husband. |
| 28 | Krister | Soder | A guy who works on the Wennerstrom Group. |
| | Ingela | Oskarsson | A part-timer at Millenium. |
| | Lotta | Karim | A part-timer at Millenium. |
| | Malin | Eriksson | A man that Erika hires as managing director. |
| 29 | Mr. | Wagner | Bank manager that Salander
had appointment with. |
| | Haselmann | | A bank manager. |
| | Monica | Sholes | Salander's fake identity. |
| | Irene | Nesser | Salander's fake identity. |
