Oude Markt is a town square in the city of Leuven, Belgium. It is a popular destination for locals and tourists alike due to its wide selection of bars, cafes, and restaurants. The square is surrounded by historic buildings with traditional Flemish architecture, including the city hall, the university library, and the church of St. Peter.

The Oude Markt is also known as "the longest bar in Europe" due to the high density of drinking establishments along the street. It is a popular destination for students, as Leuven is home to one of the largest and oldest universities in Belgium, the Katholieke Universiteit Leuven.

The square is also the location of several events throughout the year, including the Leuven Christmas Market, the Beleuvenissen music festival, and the Half Oogst festival celebrating the start of the academic year. In the summer months, many of the bars and cafes set up outdoor terraces, making it a lively and vibrant place to spend a sunny afternoon or evening.