The Excelsior (Chinese: 怡東酒店) was a four-star hotel located at 281 Gloucester Road, Causeway Bay, Hong Kong Island, in Hong Kong. It was owned and operated by Mandarin Oriental Hotel Group, a member of the Jardine Matheson Group, and served as the Mandarin Oriental Hotel Group's headquarters. The Noon-day Gun is located opposite the hotel. It closed on 31 March 2019 for demolition and replacement by an office tower.

The location of the hotel is "Lot No.1", which was the first plot of land sold at auction after Hong Kong became a British Colony in 1841. The hotel was developed on the original godown of Jardine Matheson and was officially opened on 20 February 1973. The hotel was the first in Hong Kong to have more than 1,000 rooms.

In 2015, the company obtained approval to redevelop the property into a commercial building, and it subsequently announced in June 2017 that it would test the market's interest as to a possible sale. No single bidder had met Mandarin's expectations, however, and the sale was withdrawn. The hotel closed on 31 March 2019, for demolition.

The Excelsior had several cafés and restaurants:

Like several other buildings along the Victoria Harbour, the Excelsior Hotel used a seawater air conditioning system. The seawater source for the system originated from the Causeway Bay Typhoon Shelter.

Parts of the 1978 comedy film Revenge of the Pink Panther were set in The Excelsior. The film was also partly edited in the hotel.