Charles Pratt was an American businessman. Pratt was a pioneer of the U.S. petroleum industry, and he established his kerosene refinery Astral Oil Works in Brooklyn, New York. He then lived with his growing family in Clinton Hill, Brooklyn. He recruited Henry H. Rogers into his business, forming Charles Pratt and Company in 1867. Seven years later, Pratt and Rogers agreed to join John D. Rockefeller's Standard Oil.

Astral Oil Works was an American oil company specializing in illuminating oil, and based in Brooklyn, New York. Astral Oil was a high-quality kerosene used in lamps and noted for being relatively safe. It was founded by Charles Pratt. Charles Pratt and Company became part of John D. Rockefeller’s Standard Oil Trust in 1874, although the fact that Astral Oil was a New York branch of Standard Oil in Ohio was not made public until 1892.