The Vienna Festival (Wiener Festwochen) is a culture festival that takes place in Vienna for five or six weeks in May and June every year. The Vienna Festival was established in 1951, when Vienna was still occupied by the four Allied powers.

With a radical socio-political impact, the Vienna Festival | Free Republic of Vienna is Europe's most significant cross-over festival.

The Vienna Festival features theatre, opera and dance from all parts of the globe, also acting as producers of international works.

Each year, the Vienna Festival is launched with a free, public open-air event held in the square outside of Vienna’s City Hall.

The festival attracts about 100,000 visitors per year.

Directors of the festival include:^{[citation needed]}

For five to six weeks during May and June every year, the Vienna Festival seeks to create or contribute to cultural events that combine highest artistic demands and relevant socio-political issues and goals. As an innovative and international urban festival, the Vienna Festival opens a window to the international world of theatre and features a wide range of contemporary art forms and languages.

The programme seeks to bridge tradition and current developments in productions from all genres: operas, concerts, drama, performances, installations, readings, films. Valued classics are shown in new productions next to premieres of contemporary works with international directors; artists as well as ensembles from across the globe present celebrated works, frequently in their original languages.