The Pacific Star is a military campaign medal instituted by the United Kingdom in May 1945 for award to British and Commonwealth forces who served in the Pacific Campaign from 1941 to 1945, during the Second World War.

One clasp, Burma, was instituted to be worn on the medal ribbon.

On 8 July 1943, the 1939–43 Star (later named the 1939–1945 Star) and the Africa Star became the first two campaign stars instituted by the United Kingdom, and by May 1945 a total of eight stars and nine clasps had been established to reward campaign service during the Second World War. One more campaign star, the Arctic Star, and one more clasp, the Bomber Command Clasp, were belatedly added on 26 February 2013, more than sixty-seven years after the end of the war.

Including the Arctic Star and the Bomber Command clasp, no-one could be awarded more than six campaign stars, with five of the ten clasps denoting service that would have qualified for a second star. Only one clasp could be worn on any one campaign star. The maximum of six possible stars are the following:

All recipients of campaign stars also received the War Medal.

At the same time as the Second World War campaigns against Axis Forces in Africa and Europe, Allied forces were also fighting the Japanese in the Pacific. This campaign began on 8 December 1941, the day the Japanese attacked Hong Kong, a British Colony in Far East . It took place in the sea and air of the Pacific Ocean as well as on land, with Japanese forces quickly invading Malaya, Singapore and the Philippines. While the Japanese advance across the Pacific was stemmed by mid–1942 the war continued, both at sea and on numerous Pacific islands, until the final Japanese surrender on 2 September 1945.

The Pacific Star was instituted by the United Kingdom in May 1945 for award to those who had served in operations in the Pacific Campaign from 8 December 1941 to 2 September 1945.

The eligibility criteria for the award of the Pacific Star were different for service at sea, on land and in the air.