Great Britain at the 1908 Summer Olympics

Great Britain, represented by the British Olympic Association (BOA), competed as the host nation of the 1908 Summer Olympics in London. The British Olympic Association was the National Olympic Committee responsible for organising the United Kingdom's representation. At the time British athletes competed under the team name "United Kingdom". The British team comprised 676 competitors.

It was the fourth appearance of the country, which has not missed any of the Summer Olympic Games. The country finished in the Olympic table in first place for the first and only time in its history. The Men's field hockey on the 31st of October is the last time that Great Britain swept the medal podium at an Olympics, as of 2022.