MV Oriana is the second-oldest cruise ship of the P&O Cruises fleet (as of 9 January 2011). The ship was built by Meyer Werft at their shipyard in Papenburg, Germany. At 69,000 tonnes, Oriana is the sixth largest of seven ships currently in service with P&O Cruises. She officially entered service with the company in April 1995 and was named by HM Queen Elizabeth II. Oriana holds the Golden Cockerel, as the fastest ship in the P&O Cruises fleet.

 When she was built in 1995, Oriana was the first new ship commissioned for P&O Cruises, and the first to be designed specifically for the British cruise market. She is the longest serving ship in the fleet, having been in continuous service with the company since she was launched.  She is the second ship to carry the name Oriana, and is named in tribute to the SS Oriana, which served for Orient Line and P&O from 1959 until 1986. After a lengthy campaign, P&O Cruises were permitted to allocate the new Oriana with the call sign 'GVSN', which is the same call sign as the former SS Oriana.
 From 1995 when she was built, until 2000, Oriana was owned by the Peninsular & Oriental Steam Navigation Company. In 2000, P&O de-merged it's cruise ship operations, with ownership of Oriana transferring to the new company, P&O Princess Cruises PLC. In 2003, P&O Princess merged with Carnival Corporation and Oriana came under the ownership of Carnival UK. Despite these changes of ownership, Oriana has been operated by P&O Cruises throughout.
 In 2006, she was re-registered to Bermuda so that weddings could be conducted on board, and as a result, her call sign was changed to ZCDU9.

 Oriana is 260 metres (853 ft) long, with a beam of just over 32 metres (105 ft), and a draught of 7.9 metres (26 ft), which varies up to 8.2 m depending on load. She has a gross tonnage (GT) of 69,153 tons and a maximum passenger capacity of 1,928. Outside passenger deck space is 105,000 square feet (9,800 m2). Power is provided by four MAN B&W Diesels generating a total of 47,750 kW giving her a service speed of 24 knots (44 km/h).

 MV Oriana holds the Golden Cockerel trophy for the fastest ship in the P&O fleet. Previously held by SS Oriana it passed to SS Canberra on retirement of the first Oriana in 1986. On Canberra's final cruise in 1997 the Golden Cockerel was handed over to the new Oriana when both ships were anchored off Cannes and sent boats out to perform the handover.