Cast of IF

24 credited, in billing order.

Cailey Flemingas Bea

Ryan Reynoldsas Cal

John Krasinskias Dad / Marshmallow (voice)

Fiona Shawas Grandmother

Steve Carellas Blue (voice)

Phoebe Waller-Bridgeas Blossom (voice)

Louis Gossett Jr.as Lewis (voice)

Alan Kimas Benjamin

Liza Colón-Zayasas Janet

Bobby Moynihanas Jeremy

Catharine Daddarioas Bea’s Mom

Audrey Hoffmanas Bea (Ages 3 & 5)

Laquet Sharnell Pringleas Receptionist

Ed Herbstmanas Deli Guy

Barbara Andresas Woman Upstairs

Alexander Riveroas Custodian

Shauna Pinkettas Hospital Receptionist

Sa'Raya Paris Johnsonas 7 Year-Old Girl

Marta Siteiya Moipei

Marta Siteiya Moipeias Coffee Shop Barista

David Weissmannas Young Jeremy

Awkwafinaas Bubble (voice)

Emily Bluntas Unicorn (voice)

George Clooneyas Spaceman (voice)

Bradley Cooperas Ice (voice)

Crew

John KrasinskiDirector · Writer · ProducerGeorge DeweyExecutive ProducerJJohn J. KellyExecutive ProducerKKimberly Nelson LoCascioExecutive ProducerAllyson SeegerProducerAndrew FormProducerRyan ReynoldsProducerMichael GiacchinoOriginal Music ComposerJanusz KamińskiDirector of PhotographyAAndy CannyEditorChristopher RouseEditor