Nuestra Belleza Nuevo León 2009, was a pageant in Nuevo León, Mexico was held at the Teatro de la Ciudad in Monterrey, Nuevo León on June 22, 2009. At the conclusion of the final night of competition, Adriana Treviño of Monterrey was crowned the winner. Treviño was crowned by outgoing Nuestra Belleza Nuevo León titleholder, Mariana González. Ten contestants competed for the state title. The pageant was hosted by Elsa Burgos and Arturo Carmona.