• A gulf, usually referring to a large bay that is an arm of an ocean or sea. For example, the Gulf of Mexico is the ninth largest body of water in the world.
• Gulf is also a novella by Robert A. Heinlein.
• A company, see Gulf Oil
• The Gulf is also a surreal rock band from Cambridge, MA
• JWA Gulf, the Gulf Oil sponsored, 1960s and 1970s motorracing team of John Wyer
• Gulf, North Carolina in the United States
• Gulf County, Florida
• Gulf Islands in the Strait of Georgia, Canada

The Gulf can mean:

• The Persian Gulf, By "The Gulf" usually is meant Persian Gulf;
• The Arab states of the Persian Gulf
• The Gulf of Mexico;
• The Gulf of Aden;
• The regions in Queensland, Australia south of the Gulf of Carpentaria;
• The Gulf of Carpentaria itself;
• The Gulf Freeway in Houston, Texas.

Or

• The Gulf is also used to refer to the Gulf War