Linda Flynn - Fletcher (voiced by Caroline Rhea) is the mother of Phineas and Candace and stepmother of Ferb. Unaware of the large - scale projects that Phineas and Ferb create on a daily basis, Candace often drags her away from other interests in an attempt to get the boys in trouble. Each creation is somehow destroyed or eliminated moments before "Mom '' arrives, leaving Candace dumbfounded and Linda reluctant to believe Candace. Linda was also a one - hit wonder known as "Lindana '' with her song, "I 'm Lindana and I Wanna Have Fun ''. That fact possibly makes her, as a singer, a parody of Cyndi Lauper, because of Lauper 's hit Girls Just Want to Have Fun, and because both of them were famous singers in the 1980s (Linda fictionally). Her single is used as elevator music throughout the series. Her surname is not consistent throughout the series; in at least one episode, Candace refers to her as "Linda Flynn ''. She is based on Dan Povenmire 's sister, also named Linda. She also used to date Dr. Doofenshmirtz during their mid-teens and that she was the one who inspired him to take over the Tri-State Area as a starting point for worldwide domination when he sarcastically stated that he would rule the world.
who plays the mom on phineas and ferb
Caroline Rhea