Jessi Klein is an American comedian, writer, and producer. She is the head writer and executive producer of Netflix's critically acclaimed animated series Big Mouth, as well as a consulting producer on Hulu's Emmy-winning show The Marvelous Mrs. Maisel. She has written for numerous television shows, including Saturday Night Live, Inside Amy Schumer, and Transparent. She is also the author of the New York Times bestseller You'll Grow Out of It.