San Diego Marriott Hotel and Marina, Hotel and skyscraper at Downtown Marina, San Diego, United States.

The San Diego Marriott Hotel and Marina is a 25-story high-rise located on the waterfront downtown, featuring multiple restaurants, conference facilities, and an outdoor pool with views of the bay and marina. The property combines lodging with recreational spaces and professional venues for diverse occasions.

The North Tower opened in April 1984 as the Inter-Continental San Diego, designed by C.W. Kim of Hope Consulting Group. Marriott took over management in September 1987 and renamed it. The $90 million South Tower, by Welton Becket and Associates, opened in December 1987, doubling the hotel to 1,362 rooms and making it the city's largest. Developer Doug Manchester built both towers.

The hotel's name honours the adjacent marina, whose 450 slips, run with the San Diego Port Authority, berth vessels of 25 to 150 feet; sailors moored there can have hotel amenities delivered to their dock. Marriott Hall, expanded in 2014 to 171,000 square feet of LEED Silver-certified meeting space, anchors the convention trade the towers were built to serve.

The hotel stands directly next to the Convention Center and ballpark, with easy access to water activities and transit connections throughout the city. Guests find transport options convenient and are quickly within reach of the harbor's main attractions.

The two towers were not designed as a pair: architect C.W. Kim's award-winning plan for the North Tower included a matching crescent-shaped second tower, but the developer switched architectural firms before the South Tower was built, so the flat glass block that rose in 1987 does not match its curved neighbour.