Westin Hotels & Resorts is an American upscale hotel chain owned by Marriott International. As of June 30, 2020, the Westin Brand has 226 properties with 82,608 rooms in multiple countries in addition to 58 hotels with 15,741 rooms in the pipeline.

Westin is the first major hotel to implement a comprehensive credit card reservation and check-out system. 1991.
On January 5, 1981, the company changed its name again to Westin Hotels (a contraction of the words Western International). The chain's flagship Washington Plaza Hotel in Seattle was the first property to be rebranded, becoming The Westin Hotel on September 1, 1981.[14] That same year, Westin opened a new corporate headquarters directly across the street in the Westin Building, which shared a parking garage with the hotel.

In 1987, UAL chairman Richard Ferris announced a plan to reorganize UAL as Allegis Corporation, a travel conglomerate based around United Airlines, Hertz Rent a Car, Hilton International Hotels, and Westin and linked by Apollo. This strategy failed, however, and Allegis sold Westin in 1988 to the Japanese Aoki Corporation for $1.35 billion.[16] Aoki immediately sold the Plaza Hotel to Donald Trump for $390 million.

In 1994, Aoki agreed to sell Westin to real estate investment firm Starwood Capital Group (parent of Starwood) and Goldman Sachs at an enormous loss, for $561 million, but by the time the sale closed in May 1995, the buyers had negotiated the price down to $537 million.[18] In 1998, Starwood assumed full ownership of the company.

In 2016, Marriott International acquired Starwood, becoming the world's largest hotel company.