Alexander's day begins with gum stuck in his hair, followed by more calamities. Though he finds little sympathy from his family and begins to wonder if bad things only happen to him, his mom, dad, brother, and sister all find themselves living through their own terrible, horrible, no good, very bad day.
as Ben Cooper
as Kelly Cooper
as Alexander Cooper
as Anthony Cooper
as Emily Cooper
as Baby Trevor
as Baby Trevor
as Becky Gibson
as Celia
as Nina
as Paul Dumphy
as Philip Parker
as Elliot Gibson
as Mrs. Gibson
as Audrey Gibson
as Mr. Rogue
as Steph
as Yoga Instructor
as Mr. Cellars
as Mr. Tonucci
as Receptionist Abby
as Captain Hook
as High School Teacher
as Video Game Receptionist
as Greg
as Logan
as Joaquin
as Video Game Exec Yoshi
as Mr. Brand
as Bookstore Employee
as Pharmacist
as Dwayne
as Jimmy
as Ms. Suggs
as Tux Shop Employee
as Actor John Darling
as Actor Wendy Darling
as Heather
as Thunder from Down Under Dancer
as Thunder from Down Under Dancer
as Thunder from Down Under Dancer
as Security Guard
as Nagamaki Host
as Stage Hand
as Pregnant Sheila
as Audrey's Friend (uncredited)
as Dick Van Dyke (uncredited)