William Backhouse Astor Jr. (1829-1892) was an American businessman and member of the prominent Astor family. He was the son of William Astor Sr. and inherited a significant fortune, primarily from real estate investments in New York City. Astor Jr. played a key role in managing the family’s wealth and properties. In addition to his business endeavors, Astor Jr. was known for his philanthropic efforts. He contributed to various cultural and educational institutions, including the Metropolitan Museum of Art. His legacy continues through the influence of the Astor family in American society and business.