Lorraine Baines-McFly, portrayed by Lea Thompson, is the wife of George McFly and the mother of Linda, Dave and Marty McFly in Back to the Future. Lorraine is portrayed in present-day 1985 as middle-aged as the series spans from her teenage years in 1955 to being a senior citizen in 2015.

Lorraine appears in "Finders Keepers" when Lois accuses Peter of being played for a fool like George. A cutaway shows that George is very much aware that Marty was the one that appeared in their past as he sets the carpet on fire as he mentions in the film. George takes off his belt as he pursues Marty to get more answers from him.

As Joe slides by on the wires from his wheel chair in "#JOLO", the girl announcing that he is a dream is parodying a scene from the film by Lorraine when Marty shows off his skateboarding skills.

In an alternate ending to Back to the Future in "Peter's Sister", Marty decides to go ahead and have sex with his mother before he vanishes, resulting in a deformed son that takes his place in the family photograph.

Lorraine is voiced by Lea Thompson.