Marnie Perlstein is an Australian antisemitism advocate. 

Her first career was in communications and corporate and consumer PR but she then pivoted into her next one - Jewish education. She became the Marketing Manager at Mount Scopus College in Melbourne and then worked with the Board of Jewish Education in Sydney. She is a committed and passionate member of the Sydney Jewish community and has been working to connect organizations, individuals and programs in the common goal of fighting antisemitism since 2001. 

Post October 7 she started talking online, accidentally growing from 1000 personal followers to over 40K new followers.