Distribution

• Joaquin Phoenix — Theodore Twombly
• Scarlett Johansson — Samantha (voice)
• Amy Adams — Amy
• Rooney Mara — Catherine Klausen
• Luka Jones — Mark Lewman
• Portia Doubleday — Surrogate Date Isabella
• Katherine Boecher
• Kristen Wiig — SexyKitten (voice)
• Brian Cox — Alan Watts (voice)
• Lisa Renee Pitts — Letter Writer #2
• Artt Butler — Text Voice (voice)
• David Azar — Theodore's Divorce Attorney
• Guy Lewis — Marriage Counselor
• Pramod Kumar — Pizza Vendor
• Evelyn Edwards — Mother Who Dated Pricks
• Gracie Prewitt — Jocelyn
• Laura Kai Chen — Tatiana
• Lil Buck — Busker / Dancer
• Spike Jonze — Alien Child (voice)
• Lynn Adrianna — Letter Writer #1
• Olivia Wilde — Blind Date
• Chris Pratt — Paul
• Matt Letscher — Charles
• Sam Jaeger — Dr. Johnson
• Bill Hader — Chat Room Friend #2 (voice)
• Steve Zissis — New Sweet Boyfriend of Mother Who Dated Pricks
• Claudia Choi — Uncomfortable Waitress