Eugène Bonaventure Jean-Baptiste Vigo (known as Miguel Almereyda; 5 January 1883 – 14 August 1917) was a French journalist and activist against militarism.
He was first an anarchist and then a socialist.
He founded and wrote in the newspaper La Guerre sociale and the satirical weekly Le Bonnet rouge.
During World War I (1914–18) he engaged in dubious business dealings that brought him considerable wealth.
He became engaged in a struggle with right-wing forces, and was eventually arrested on the grounds of being a German agent.
He died in prison at the age of 34, almost certainly murdered.