Elizabeth Bienvenu McNulty is a beauty queen from Lafayette, Louisiana who competed in the Miss USA pageant in 2007.

McNulty won the Miss Louisiana USA 2007 title in a state pageant held in Lafayette on Sunday 4 December 2006. She won the competition in her third attempt at the title, having placed second runner-up in the 2006 event and in the top fifteen in 2005. She was crowned by outgoing titleholder Christina Cuenca.

McNulty represented Louisiana in the nationally televised Miss USA 2007 pageant broadcast live from the Kodak Theatre in Hollywood, California on March 23, 2007 and placed in the top 15. Her sister titleholder is Logan Travis of Amite, Louisiana, Miss Louisiana Teen USA 2007.