The Greenbrier is a Forbes four-star and AAA Five Diamond Award winning luxury resort located just outside the town of White Sulphur Springs in Greenbrier County, West Virginia, United States.

For most of its history, the hotel was owned by the Chesapeake & Ohio Railway and its successors, including the CSX Corporation. Before its most recent purchase and sale, the hotel was operated by CSX Hotels, Inc., a subsidiary of the CSX Corporation.

Following a year of heavy losses, CSX placed the hotel into bankruptcy in 2009. Justice Family Group, LLC, a company owned by local entrepreneur Jim Justice, subsequently bought the property and guaranteed all debts, resulting in dismissal of the bankruptcy. Justice has promised to return the hotel to its former status as a five-star resort and to introduce "tasteful" gambling for guests as a revenue enhancer. The Greenbrier Hotel Corp. today operates as a subsidiary of Justice's company.

The last U.S. president to stay at The Greenbrier during his presidency was Dwight Eisenhower. A total of twenty six presidents, both former and current, have stayed at The Greenbrier.

The Greenbrier is also the site of a massive underground bunker that was meant to serve as an emergency shelter for the United States Congress during the Cold War. It was code named "Project Greek Island" and Fritz Bugas was former on-site Superintendent.