Caren Nicole Lay (born 11 December 1972) is a German politician (Die Linke). She has been a member of the Bundestag since 2009 and has been deputy chairperson of the Die Linke parliamentary group in the Bundestag since 2017. From 2012 to 2018, she was one of the deputy chairpersons of her party. In November 2019, Lay unsuccessfully applied to succeed Sahra Wagenknecht as co-chairperson of the Die Linke parliamentary group in the Bundestag. She was defeated by Amira Mohamed Ali in a competitive vote.