Great Britain participated at the 2015 European Games, in Baku, Azerbaijan from 12 to 28 June 2015. As this was the inaugural Games, this was Great Britain's first appearance.

On 17 October 2014, the British Olympic Association announced that 14 sports and 20 disciplines were seeking qualification for the games.

On 23 April 2015, the British Olympic Association announced the selection of a team of 153 athletes to compete at the Games with a further 10 male boxers to be chosen shortly. Although Great Britain had won several quota places in both badminton and cycling they have chosen not to participate in these sports in Baku. On 6 May 2015, the British Olympic Association named an additional ten athletes - 9 boxing, 1 shooting - to complete the British team to compete in Baku.

On 2 June 2015, it was announced that five athletes had withdrawn from the British team: Lisa Whiteside (boxing), Tyesha Mattis and Rebecca Tunney (both artistic gymnastics), and Helen Jenkins and Jess Learmonth (both triathlon). Mattis and Tunney were replaced by Charlie Fellows and Georgina Hockenhull.

Great Britain left the inaugural Games with a total of 47 medals (18 gold, 10 silver, and 19 bronze), finishing third in the medal table rankings, and fourth in the total number of medal rankings. At least one medal was awarded to Team GB in nine sports, seven of them contained at least one gold. Great Britain topped the medal table in triathlon, and diving, although the most successful sport for Great Britain was swimming, with 23 medals, seven gold.

Seventeen British athletes won more than a single European Games medal in Baku, with the most successful being swimmers Duncan Scott, with three golds and three silvers, both the most successful (three golds) and most decorated (six medals) athlete and Luke Greenback with two golds and two silvers, as well as a world junior record in 200 metres backstroke, the only other multiple gold medalist. Abbie Wood, with one gold, one silver and two bronze medals was the most successful female competitor for Great Britain, and one of three athletes, with diver James Heatly and fellow swimmer Martyn Walton, to win at least one medal of every colour. Georgia Coates, with five medals, was the most decorated female competitor for Great Britain at the Games.

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