The Rosia Water Tanks were large water tanks built at the turn of the nineteenth century at Rosia Bay in the British Overseas Territory of Gibraltar. They were constructed based on the recommendation by Admiral John Jervis, 1st Earl of St Vincent that the Victualling Yard complex be relocated to Rosia Bay. The complex allowed Royal Navy vessels to obtain both food and water at one site. The Rosia Water Tanks remained in the possession of the Ministry of Defence until 2004, at which time they were transferred to the Government of Gibraltar. Despite local and international criticism, and a court case brought by the Gibraltar Heritage Trust, the tanks were demolished in 2006 to make way for affordable housing. When developer OEM International's funding proved insufficient to complete the project the government repossessed the site.

The Victualling Yard was a victualling facility in the British Overseas Territory of Gibraltar built for supplying Royal Navy ships while anchored at Rosia Bay.