<Li> John Krasinski, as Lee Abbott, an engineer, husband of Evelyn, and the father of Regan, Marcus, and Beau . Krasinski described his character as a survivalist who focuses on getting his family through each day . </Li> <Li> Millicent Simmonds as Regan Abbott, Lee and Evelyn's deaf daughter, and Marcus and Beau's sister . Krasinski said he sought a deaf actress, "...for many reasons, I didn't want a non-deaf actress pretending to be deaf . Most importantly though, because a deaf actress would help my knowledge and my understanding of the situations tenfold . I wanted someone who lives it and who could teach me about it on set ." </Li> <Li> Noah Jupe as Marcus Abbott, the oldest son of Lee and Evelyn, and Regan and Beau's brother . Krasinski noticed Jupe in the 2016 miniseries The Night Manager and later saw an early screening of the 2017 film Suburbicon to evaluate Jupe's performance . </Li> <Li> Cade Woodward as Beau Abbott, the younger son of Lee and Evelyn . </Li>

Who plays the son in a quiet place