Guillermo Portabales (6 April 1911 – 25 October 1970) was a Cuban singer-songwriter and guitarist who popularized that guajira style of Cuban music from the 1930s through the 1960s. His languid, melancholy, intensely lyrical guajiras and his elegant, stylish singing made him greatly popular throughout Latin America, where he is still revered. Portabales was born José Guillermo Quesada del Catillo in the province of Rodas, in the former department of Las Villas.