Megan Williams may refer to:
Megan Williams case, Megan Williams, American woman who falsely accused six people of kidnapping, torture, and rape
Megan Williams (actress) (1956–2000), Australian actress and singer
Megan Williams (artist) (born 1956), American contemporary artist
Megan Williams (author) (born 1984), Canadian author
Megan Williams-Stewart (born 1987), American figure skater
Megan Williams, fictional protagonist of My Little Pony