Silvio Ruiz Grisales is a waste picker from Bogotá, Colombia. He is involved in three waste picker groups in Colombia: The Colombian Association of Waste Pickers (Asociación Colombiana de Recicladores – GAIAREC), the Waste Pickers’ Cooperative of Bogotá (ARB ESP), and the National Association of Waste Pickeres (ANR). He is also a representative of the Latin American and Caribbean network of waste pickers (Red Lacre).