Jay Baruchel is only 1/4 Jewish. For future reference: Actors of fully Jewish background: -Logan Lerman, Joseph Gordon-Levitt, Mila Kunis, Natalie Portman, Bar Refaeli, James Wolk, Julian Morris, Esti Ginzburg, Kat Dennings, Erin Heatherton, Odeya Rush, Anton Yelchin, Paul Rudd, Scott Mechlowicz, Andrew Garfield, Lizzy Caplan, Emmanuelle Chriqui, Gal Gadot, Robert Kazinsky, Melanie Laurent, Marla Sokoloff, Shiri Appleby, Justin Bartha, Adam Brody, Sarah Michelle Gellar, Gabriel Macht.
Actors with Jewish mothers and non-Jewish fathers -Jake Gyllenhaal, James Franco, Scarlett Johansson, Daniel Radcliffe, Alison Brie, Eva Green, Emmy Rossum, Jennifer Connelly, Eric Dane, Jeremy Jordan.
Actors with Jewish fathers and non-Jewish mothers, who themselves were either raised as Jews and/or identify as Jews: -Ezra Miller, Alexa Davalos, Nat Wolff, James Maslow, Josh Bowman, Ben Foster, Nikki Reed.
Actors with one Jewish-born parent and one parent who converted to Judaism -Dianna Agron, Sara Paxton (whose father converted, not her mother), Alicia Silverstone, Jamie-Lynn Sigler.
Jay Baruchel is only 1/4 Jewish. For future reference: Actors of fully Jewish background: -Logan Lerman, Joseph Gordon-Levitt, Mila Kunis, Natalie Portman, Bar Refaeli, James Wolk, Julian Morris, Esti Ginzburg, Kat Dennings, Erin Heatherton, Odeya Rush, Anton Yelchin, Paul Rudd, Scott Mechlowicz, Andrew Garfield, Lizzy Caplan, Emmanuelle Chriqui, Gal Gadot, Robert Kazinsky, Melanie Laurent, Marla Sokoloff, Shiri Appleby, Justin Bartha, Adam Brody, Sarah Michelle Gellar, Gabriel Macht.
Actors with Jewish mothers and non-Jewish fathers -Jake Gyllenhaal, James Franco, Scarlett Johansson, Daniel Radcliffe, Alison Brie, Eva Green, Emmy Rossum, Jennifer Connelly, Eric Dane, Jeremy Jordan.
Actors with Jewish fathers and non-Jewish mothers, who themselves were either raised as Jews and/or identify as Jews: -Ezra Miller, Alexa Davalos, Nat Wolff, James Maslow, Josh Bowman, Ben Foster, Nikki Reed.
Actors with one Jewish-born parent and one parent who converted to Judaism -Dianna Agron, Sara Paxton (whose father converted, not her mother), Alicia Silverstone, Jamie-Lynn Sigler.