Jacob Sager Weinstein (born January 8, 1972) is an American author, humorist, comedy writer, and screenwriter. For three years he was a staff writer for Dennis Miller Live, for which he received a Writers Guild of America award in 2001. Earlier he was a contributor to The Onion, and he has also written for McSweeney's Internet Tendency, the North American Review, and The New Republic. In 2012 he published the sardonically titled How Not To Kill Your Baby. Sager Weinstein is the author of the Hyacinth Series, a middle-grade fantasy trilogy about enchanted rivers under London.