The Casa Grande class was a class of dock landing ships used by the Royal Navy and the United States Navy during the Second World War.

The 'Landing Ship Dock' or LSD developed from a British staff requirement for a type of self-propelled drydock to transport beaching craft over long distances, that would in turn deliver trucks and supplies onto the beach.

[1] With the option of fitting extra decks, large numbers of vehicles could be transported, and loaded into landing craft via ramps.

[1] The British initially ordered seven of the class from US dockyards, numbered LSD-9 to 15.

[1] Only four were delivered, numbers 9 to 12, while 13 to 15 were retained by the US Navy, which ordered another twelve to the design, but only built ten.