Amoco was a United States oil company formed from the dissolution of Standard Oil.

It was originally Standard Oil of Indiana, or Stanolind despite the fact that its headquarters was in Chicago, Illinois. Early operations centered on the Whiting, Indiana refinery.

Standard Oil of Indiana expanded from its Midwest roots by acquiring The American Oil Company (Amoco) along the eastern US coast and Pan-Am Petroleum in the southeastern US.

In 1998 the company merged with British Petroleum to form BPAmoco, which was later renamed simply BP.

Even though BP is currently changing existing Amoco stations to the BP livery, they are using the Amoco brand name for their gasoline and Diesel fuel.