|Margaret Evelyn Simpson|
|Alias(es)||Mrs. Simpson (by Gino Terwilliger)|
|Relatives||Parents: Homer Simpson and Marge Simpson|
Husband: Gerald Samson (possible)
|First Appearance||Simpsons Roasting on an Open Fire|
|Voiced By||Yeardley Smith (Formerly) Nancy Cartwright|
Margaret Evelyn "Maggie" Simpson (born June 16, 1988) is the 1-year-old, and youngest, child of Marge and Homer, and the baby sister to Bart and Lisa. She is often seen sucking on her pacifier, and, when she walks, she trips over her clothing and falls on her face. Because she rarely ever talks, Maggie is the least seen and heard in the Simpson family. She was voiced by Nancy Cartwright.
- She legally changed her surname to "Martinez" in "Fancy Livin'".