Astoria is a grand houseboat moored on the River Thames at Hampton in the London Borough of Richmond upon Thames, between Garrick's Temple to Shakespeare and St Alban's Riverside. Astoria was built in 1911 for impresario Fred Karno, proprietor of the short-lived Karsino Hotel on nearby Tagg's Island. Astoria was purchased in 1986 by Pink Floyd guitarist David Gilmour, who converted the houseboat into a floating recording studio, recording and mixing several Pink Floyd and solo albums on board, including A Momentary Lapse of Reason and The Division Bell.

Astoria was built in 1911 for music hall theatre impresario Fred Karno. Karno had owned a houseboat named Highland Lassie, moored on Tagg's Island, since 1903. After a period of successful ventures Karno sought to upgrade his riverside accommodations, approaching Henry Hewitt, owner of the impressive houseboat Satsuma, anchored upstream at nearby Platt's Eyot, for advice, and instructing his stage carpenter Bill Day to build preparatory wooden scale models for a much larger houseboat. Once plans were finalised by Hewitt, the hull was laid down in Brentford, and on completion moored at Tagg's Island.

Karno then commissioned local workman to construct the boat's superstructure, with the window frames installed by Crittals, the mahogany panelling for the saloon and cabins by Higgs of Loughborough Road, and the furnishing by Maple's of Tottenham Court Road. Astoria was crowned by a sun deck, 90 feet long and 18 feet wide, which could accommodate a full orchestra and dance floor under a canvas roof on a wrought iron frame strung with fairy lights. The boat was fitted with electric light supplied from the island, and supplied with water from an artesian bore. Astoria reputedly cost £7,500 to build.

After the failure of the Karsino Hotel and decline in music hall theatre Karno was declared bankrupt in 1926, and the Astoria sold.

Astoria was purchased out of Karno's bankruptcy in 1926 by Vesta Victoria, music hall singer and comedian. Victoria resided on Astoria until her death in 1951. The houseboat was sold by her estate for £14,000, to a businessman who, seeking privacy, towed the houseboat to its current position upstream from Tagg's Island, moored on the north bank.

I just happened to find this beautiful boat that was built as a houseboat and was very cheap, so I bought it. And then only afterward did I think I could maybe use it to record. The control room is a 30-foot by 20-foot room. It's a very comfortable working environment—three bedrooms, kitchen, bathroom, a big lounge. It's 90 feet long.

Pink Floyd lead guitarist David Gilmour purchased Astoria from Sir James Greenwood in 1986, after seeing it advertised for sale in a copy of Country Life magazine in his dentist's waiting room, just a short while after admiring it while being driven past its moorings.

In a 2008 interview recorded as part of a segment on Astoria on the BBC television programme Three Men in a Boat, Gilmour explained he had "spent half of [his] life in recording studios with no windows, no light, but on the boat there are many windows, with beautiful scenery on the outside".