Anna
Hailee Steinfeld
Marnie
Kiernan Shipka
Anna Sasaki (voice)
Sara Takatsuki
Mrs. Kadoya
Kathy Bates
Marnie
Kasumi Armura
Kiyomasa Oiwa
John C. Reilly
Young Hisako
Mila Brener
Yoriko Sasaki (voice)
Nanako Matsushima
Marnie (voice)
Kasumi Arimura
Kiyomasa Oiwa (voice)
Susumu Terajima
Elderly Lady
Ellen Burstyn
Hisako
Vanessa Williams
Setsu Oiwa (voice)
Toshie Negishi
Yoriko Sasaki
Geena Davis
Setsu Oiwa
Grey Griffin
Elderly Lady (voice)
Ryoko Moriyama
Nanny (voice)
Kazuko Yoshiyuki
Elderly Lady
Catherine O'Hara
Hisako (voice)
Hitomi Kuroki
Nobuko Kadoya
Raini Rodriguez
Sayaka Mochizuki
Ava Acres
Art Teacher (voice)
Hiroyuki Morisaki
Neighborhood Association Officer (voice)
Takuma Otoo
Sayaka (voice)
Hana Sugisaki
Elderly Lady 2 (voice)
Bari Suzuki
Marnie's Father (voice)
Shigeyuki Totsugi
Toichi (voice)
Ken Yasuda
Dr. Yamashita (voice)
Yo Oizumi
Marnie's Mother (voice)
Yuko Kaida