Brendan O'Brien is an American screenwriter, best known for writing the 2014 film Neighbors along with Andrew J. Cohen.
O'Brien and his screenwriter-director friend Andrew J. Cohen were both born and grew up in Scarsdale, New York, and both went to Scarsdale Middle School, where they became friends in the sixth grade.
[1] In 2014, O'Brien co-wrote the script for the comedy film Neighbors along with Cohen, starring Zac Efron and Seth Rogen.
[3] O'Brien and Cohen also co-wrote the scripts for two 2016 films, Neighbors 2: Sorority Rising and Mike and Dave Need Wedding Dates.
[2] O'Brien and Cohen also co-wrote the 2017 comedy film The House.