Who is Lorraine in Back to the Future Part II?

Marty's mother in the 2015 timeline, living a wealthy but troubled life.

Who plays Lorraine in Back to the Future Part II?

Lorraine is played by Lea Thompson.

Lorraine's abilities include wealth management, family leadership, timeline adaptation.

Lorraine has 3 mapped relationships in Back to the Future Part II. Explore the interactive relationship map for details.

George McFly (Spouse). Marty McFly (Child). Marty McFly (Unmarried partner).

Lorraine — Family Mother — Marty McFly / Marty McFly Junior / Marlene McFly (Michael J. Fox)
Marty is horrified to find his mother married to Biff in the dystopian timeline.

Lorraine is Marty's mother; in the alternate 1985 Biff forces her to marry him.
Lorraine — Family Forced Husband — Biff Tannen / Griff (Thomas F. Wilson)
In the alternate 1985, Lorraine is Biff's unwilling wife.

Biff forced Marty's mother Lorraine to marry him after secretly killing George in 1973.
Lorraine — Family Future Daughter-in-law — Jennifer (Elisabeth Shue)
Jennifer is destined to marry into the McFly family, making Lorraine her future mother-in-law.

Jennifer wakes up in her 2015 home and hides from the McFly family, overhearing her future life with Marty.