Kal Penn as Gogol / Nikhil

Irrfan Khan as Ashoke Ganguli

Tabu as Ashima Ganguli

Jacinda Barrett as Maxine Ratliffe

Zuleikha Robinson as Moushumi Mazoomdar

Ruma Guha Thakurta as Ashoke's Mother

Sabyasachi Chakraborty as Ashima's Father

Sahira Nair as Sonali Ganguli

Supriya Choudhury as Ashima's Grandmother

Jhumpa Lahiri as Jhumpa Mashi

Kharaj Mukherjee as Chhotoo

Glenne Headly as Lydia

Brooke Smith as Sally

Jagannath Guha as Ghosh

Heather MacRae as Nurse Petty

Michael Countryman as Mr. Wilcox

Sukanya as Rini

Rupak Ginn as Uncle

Linus Roache as Mr. Lawson

Josh Grisetti as Jerry

Dan McCabe as Bart

Bobby Steggert as Jason

Tanusree Shankar as Ashima's Mother

Tamal Ray Chowdhury as Ashoke's Father

Stuart Rudin as Homeless Man

Amy Wright as Pam

Jo Yang as Ms. Lu

Gary Cowling as Hotel Manager

Gretchen Egolf as Astrid

Baylen Thomas as Blake

Jeb Brown as Oliver

Jessica Blank as Edith

Benjamin Bauman as Donald

Sebastian Roché as Pierre

Maximiliano Hernández as Ben

Sandip Deb as Music Teacher

Dhruv Mookerji as Rana

Kousik Bhowal as Dr. Gupta

Rupak Ginn as Mira Mashi

Pallavi Shah as Kajol Mashi

Jhumpa Lahiri as Baby Sonia

BC Parikh as Mr. Mazumdar

Sibani Biswas as Mrs. Mazumdar

Lakhan Das as Baul Singer

Glenne Headly as Funeral Priest

Kartik Das as Boatman