Tadamasa Hayashi (林 忠正, 1853-1906) was a Japanese art dealer who introduced traditional Japanese art such as ukiyo-e to Europe.
Tadamasa was born to a family of Physician the Nagasaki family. When he was still a child, he was adopted to the Hayashi family, an upper class samurai of Toyama-han. He then went to attend the University of Tokyo. In 1878, he decided to go to Paris, as a translator to seek a new life abroad. In Paris, he began a career as Japanese art dealer.
He provided the text for the May 1886 edition of Paris Illustré. Vincent van Gogh traced the figure on the title page for his painting The Courtesan.[1]