This paper illustrates the spread of Jean-Baptiste Say's entrepreneur theory in Spain –a last contribution within the French tradition in which Richard Cantillon and A. R. J. Turgot were predecessors. We attempt to demonstrate that this is a special case, because, even though J. B. Say was the most important author from a publishing point of view, his economic theory of entrepreneurship had very little influence. The spread of economic ideas by way of translation and Spanish authors which employed J. B. Say's economic theory, give possible explanations to a paradox which had left economic policy without a theoretical reference. We analyse how Say's entrepreneur theory was received among Spanish authors in the 19th century, its degree of comprehension and the analytical additions made, and attempt to identify the real source of transmission.
