Wilson Pinheiro (died in 1980) was the president of the Brasiléia Rural Workers Union in the State of Acre in Brazil. He helped lead the fight against ranchers who were destroying the Amazon Rainforest. Pinheiro was committed to defense of the Amazon and was assassinated on July 21, 1980. He was a colleague of Chico Mendes, the President of the Xapuri Rural Workers Union, who similarly lost his life defending the Amazon.