The 1979 European Parliament election was a series of parliamentary elections held across all 9 (at the time) European Community member states. They were the first European elections to be held, allowing citizens to elect 410 MEPs to the European Parliament, and also the first international election in history.

Seats in the Parliament had been allocated to the states according to population, and in some cases were divided into constituencies, but members sat according to political groups.

The Treaty of Rome which established the Communities specified that the European Parliament must be elected by universal suffrage using a common voting system. The Council of the European Union was responsible for setting up the elections but it had procrastinated. As a stop-gap measure, members were appointed to the Parliament by the member states from their own national parliaments, as they had done since the Common Assembly. The Parliament was unhappy with this and threatened to take the Council to the European Court of Justice. The Council eventually agreed to elections and the first European Parliament elections were held in 1979 after proposals were put forward in the mid-1970s. The issue of a common voting method was left undecided, and even to this day the voting methods vary from member state to member state, although all have used some form of proportional representation since 1999.

The campaigns varied. The former Social Democrat German Chancellor Willy Brandt took an international campaign to France, Italy, Luxembourg and the Netherlands to boost the Socialist group. On the other hand, the former Prime Minister of France Jacques Chirac used the election to gauge his popularity against the then-President of France Valéry Giscard d'Estaing, in anticipation of a presidential bid in 1981.

In June, the 410 members were elected by universal suffrage. At the time there were no rules on the system of election to be used. The United Kingdom used a plurality voting system for multiple small constituencies in Great Britain but the other member states used proportional representation for fewer larger constituencies (usually the member state itself as a single constituency), albeit with different methods of seat allocation.

The electorate took little interest but average voter turnout was 63%. The lowest turn out was in the United Kingdom with 32.2%: all others were above 50% apart from Denmark. Aside from Belgium and Luxembourg, where voting is compulsory, the highest turnout was in Italy with 84.9%.

Socialist parties working together under the Europe-wide Confederation of Socialist Parties won the most seats: the resultant Socialist group had 113 MEPs. Christian Democrat parties united within the pan-European European People's Party came second, with the resultant group having 107 MEPs. The largest third force was the Conservative European Democrats with 64, followed by Communists with 44. The Liberal Democrats had 40 seats, although their candidate was elected as President.

The groups formed were loose coalitions based on the groups founded in previous years, but they soon became the basis for modern European political parties.