Pilies Street (literally, "Castle Street"; Lithuanian: Pilies gatvė) is one of the main streets in the Old Town of Vilnius, the capital of Lithuania. It is rather a short street, running from Cathedral Square to the Town Hall Square.

Out of several locations across Vilnius used by market traders to sell the wares of folk artists, Pilies Street is the most popular. It has a natural advantage over the Town Hall Square as the street is generally busy and less likely to be interrupted by the political or cultural events commonly held at the Town Hall. Many people visit the street to buy gifts at Christmas or before going abroad to visit friends. The market is also popular with souvenir hunters. Souvenir shops offer amberware and amber jewelry as well as linen clothes. The street is also known for the Kaziukas Fair, when folk artists from all four corners of Lithuania gather here to display and sell their latest merchandise.

Speaking of festivals, if something is being celebrated in Vilnius, Pilies Street is usually an excellent vantage point – most processions will make their way through here at some point. This is true whatever the festival – be it Christmas, Easter, the day of Restoration of Independence, or just a spontaneous celebration following a major win for the Lithuanian basketball team.