Leland Palmer
| Real name: | Ray Wise |
| Born: | 1947 |
| Description: | Leland is Laura's father. He works as a lawyer for Benjamin Horne. He enjoys singing old songs. |
Sarah Palmer
| Real name: | Grace Zabriskie |
| Born: | ? |
| Description: | Sarah is Laura's mother. She has a lot of true visions after Laura is dead about her killer and other significant people during the investigation. |
Laura Palmer
| Real name: | Sheryl Lee |
| Born: | April 22nd 1967 |
| Description: | The central person in the show, althoug she is dead. She is found by Pete and the FBI comes to investigate her death. |
Madeleine Ferguson
| Real name: | Sheryl Lee |
| Born: | April 22nd 1967 |
| Description: | Madeleine is Laura's cousin. She has come to Twin Peaks to attend Laura's funeral. |