Guacolda (from Mapudungún, Wa-kelü, meaning "corn-colored", in reference to her possibly blonde hair, died 1557), baptized as Teresa, was the wife of Mapuche lonko Lautaro.

Her existence, similarly to Caupolicán's alleged wife, Fresia, is a matter of debate, as some consider her to be a mythological legend and others consider her to be a real historical figure.

[1] She was allegedly raised in the household of Pedro de Villagra, where she was given the Christian name of Teresa.

When Lautaro's army conquered the city of Concepción, she deeply fell in love with him and decided to run away,[1] accompanying him on all of the future battles which he led against the Spanish.

[2] After this, Francisco de Villagra took Guacolda with him, after which she apparently "died of sadness".