The 1929 United Kingdom general election was held on Thursday, 30 May 1929 and resulted in a hung parliament. Ramsay MacDonald's Labour Party won the most seats in the House of Commons for the first time despite receiving fewer votes than the Conservative Party, led by Prime Minister Stanley Baldwin. The Liberal Party led again by former Prime Minister David Lloyd George regained some ground lost in the 1924 general election and held the balance of power. Parliament was dissolved on 10 May.

James Ramsay MacDonald was a British statesman and politician who served as Prime Minister of the United Kingdom, the first who belonged to the Labour Party, leading minority Labour governments for nine months in 1924 and again between 1929 and 1931. From 1931 to 1935, he headed a National Government dominated by the Conservative Party and supported by only a few Labour members. MacDonald was expelled from the Labour Party as a result.