DEV PATEL (Saroo Brierley), NICOLE KIDMAN (Sue Brierley), ROONEY MARA (Lucy), SUNNY PAWAR (Saroo, enfant), ABHISHEK BHARATE (Guddu), PRIYANKA BOSE (Kamla), ROHINI KARGAIYA (Shekila), KHUSHI SOLANKI (Shekila, enfant), SHANKAR NISODE (Shankar), TANNISHTHA CHATTERJEE (Noor), NAWAZUDDIN SIDDIQUI (Rawa), RIDDHI SEN (l'homme au café), KOUSHIK SEN (le gradé de la police), RITA BOY (Amita), UDAY SHANKAR PAUL (le professeur de Liluah), SUROJIT DAS (Shonedeep), DEEPTI NAVAL (Madame Sood), MENIK GOONERATNE (Swarmina), DAVID WENHAM (John Brierley), KESHAV JADHAV (Mantosh, enfant), BENJAMIN RIGBY (le serveur), TODD SAMPSON (Provost), DANIELA FARINACCI (la tutrice), PALLAVI SHARDA (Prama), SACHIN JOAB (Bharat), ARKA DAS (Sami), EMILIE COCQUEREL (Annika), VINOD CHAUHAN (le commerçant), BABLI PANDEY (la femme avec le bébé), MADHUKAR NARLWADE (l'homme qui parle anglais)