Lambda Theta Nu (ΛΘΝ) is a Latina-based Greek letter intercollegiate sorority founded in 1986 at California State University, Chico.

Eighteen Latina students at California State University, Chico banded together during what they termed "a time of social struggles for Latinos, particularly those seeking higher education",[1] forming a new sorority on March 11, 1986 which they named Lambda Theta Nu.

[2][3] The sorority explains that the Founders surpassed the status quo for Latinas of the day by attending college; finding strength in numbers they realized that by coming together they could create a support system of helpful, friendly faces and hone a united voice to be heard, respected and recognized on its merits.

Lambda Theta Nu Sorority, Inc. also promotes the advancement of Latinas through various campus activities and community services, and provides an environment for personal growth within a unit of sisterhood.

Perhaps surprising, and in a nod to the organizations' Hispanic roots, Lambda Theta Nu members regularly perform step dances with machetes to symbolize their culture and the strength of Latina Women.

[5] One of the main goals of Lambda Theta Nu Sorority, Inc. is to encourage and assist Latinas in the advancement of higher education, dedication to community service, and to provide an environment for personal growth within a unit of sisterhood.