Abstract: (Miguel de Unamuno y Jugo – mirror biography and its reflections on the screen) Miguel de Unamuno y Jugo (1864, Bilbao – 1936, Salamanca) was an essential figure in Spanish culture. He lived 36 years in the 19th century and another 36 in the 20th and ended up wrapped in paradoxes. His versatile and non-conformist personality, replete by contradictions, has been studied by outstanding historians and philosophers and has become a myth. Recently, his quixotic figure has also been projected on the screen. The biographical dramas La isla del viento (Manuel Menchón, 2015) and Mientras dure la guerra (Alejandro Amenábar, 2019), as well as the documentary Palabras para un fin del mundo (Manuel Manchón, 2020), portray him intimately linked to his historical circumstances. In this context, Unamuno’s biography is transcendental to untangling the tangled threads of a historical past whose scars are still conspicuous. Based on certain bio-bibliographical aspects and cinematographic reflections, this work aims to highlight some of the key points in Unamuno’s life and work in relation to the history of Spain and the concept of intrahistory, coined by Unamuno himself. Outlining his biographical trajectory, reveals both history in capital letters and the story of an intellectual imbricated in his time and committed to the destiny of his homeland.