Guilherme de Brito Bollhorst (January 3, 1922 – April 28, 2006), known as Guilherme de Brito, was a Brazilian sambista, singer, songwriter, and painter. Born in Vila Isabel, a neighborhood with a rich samba tradition, he was acquainted with the renowned Noel Rosa. Brito was the son of Alfredo Nicolau Bollhorst and Marieta de Brito Bollhorst. He received a cavaquinho at the age of eight and later became a violonista. After the death of his father when he was 12, Brito left school to work, finding employment at Casa Edson, one of Brazil's first recording studios.

His artistic talent emerged early, as he enjoyed drawing with pencils and coal. Brito's most significant partnership was with Nelson Cavaquinho, with whom he wrote 75 of his 153 songs. Their works were recorded by many samba artists, including Cartola, Elizeth Cardoso, and Beth Carvalho. Some of their famous songs include "A Flor e O Espinho," "Quando eu me Chamar Saudade," "Pranto de Poeta," "Folhas Secas," and "Minha Festa."

As a painter, Brito's works were exhibited in galleries in Brazil, the United States, Japan, and Australia. His discography includes albums such as "A Flor e o Espinho" (2003), "Samba Guardado" (2001), "Folhas Secas" (1990), and "Guilherme de Brito" (1988, 1980).