Jabez Abel Bostwick (September 23, 1830 – August 16, 1892) was an American businessman who was a founding partner of Standard Oil.

He bought out Tilford and in 1878 went into successful partnership with Henry Flagler and the Rockefeller brothers, John and William.

In spite of the enormous wealth he obtained, Bostwick was known as a modest man of exemplary character who was a devout member of the Baptist Church.

Together, they were the parents of: On August 16, 1892, Bostwick died in a freak stable fire at Friedheim, his summer residence in Mamaroneck in Westchester County.

His widow, Helen C. Bostwick, upon her death on April 27, 1920 left an estate per public record that was valued at $29,264,181.00, including nearly $20 million of Standard Oil stock.