Mariana "Lali" Espósito (Spanish pronunciation: ; born 10 October 1991), who records mononymously as Lali, is an Argentine actress, singer and songwriter. Espósito began her career as a child actress in 2003 when she joined the cast of the children's telenovela Rincón de Luz, created by producer Cris Morena. She had other subsequent supporting roles in telenovelas Chiquititas and Floricienta and a main role in Casi Ángeles, the latter of which increased her fame in Latin America and Israel.

From 2007 to 2012, Espósito, along with four other cast members from Casi Ángeles, was part of the teen pop band Teen Angels, which originated from the series. The group was commercially successful internationally, and toured throughout Argentina and countries such as Israel, Spain, Chile and Uruguay. Espósito also sang in the soundtracks of Rincón de Luz and Chiquititas. Following her role in the unsuccessful 2011 telenovela Cuando me sonreís and her portrayal of Abigail Williams in the Buenos Aires production of The Crucible, Espósito made her film debut in La pelea de mi vida in 2012, starring alongside Mariano Martínez and Federico Amador. In January 2013, she began acting in the television comedy Solamente Vos, as the daughter of Adrián Suar's character. In 2015, Espósito portrayed her first lead role on TV as "Esperanza" on Esperanza mía. Its soundtrack album, in which she appeared on nine of the eleven tracks, received a platinum certification in Argentina for selling over 40,000 copies.

In 2013, she announced the release of A Bailar, her debut solo studio album, with pop and EDM influences. "A Bailar" was released as the lead single of the homonymous album, A Bailar, which was released on March 21, 2014. It spawned the hit singles "Asesina", "Mil Años Luz", "Del Otro Lado" and "Histeria". The album peaked at No. 5 in Argentina and at No. 3 in Uruguay. In 2016, she released her sophomore studio album Soy after the previous release of the singles "Unico" and Soy". Both albums were certified gold in Argentina by Cámara Argentina de Productores de Fonogramas y Videogramas (CAPIF).

Espósito's accolades include two Gardel Awards, one Kids' Choice Award, seven Argentine Kids' Choice Awards, three MTV Millennial Awards, one Tato Award and one Martin Fierro Award nomination. In 2015, Infobae named Espósito one of the 10 most influential women in Argentina.