Ptuj is a town in northeastern Slovenia that is the seat of the Municipality of Ptuj. Ptuj, the oldest recorded city in Slovenia, has been inhabited since the late Stone Age and developed from a Roman military fort. Ptuj was located at a strategically important crossing of the Drava River, along a prehistoric trade route between the Baltic Sea and the Adriatic. The area is part of the traditional region of Styria and it was part of the Austria-Hungarian Empire. In the early 20th century the majority of the residents were ethnic Germans, but today the population is largely Slovene. Residents of Ptuj are known as Ptujcani in Slovene.

Landmarks include:

The parish church in the settlement is dedicated to Saint George and belongs to the Roman Catholic Archdiocese of Maribor. It is a three-naved Gothic building from the 13th and early 14th century, but the structure incorporates parts of a much earlier structure, dating to the mid-9th century.

• Ptuj Castle
• St. George's Church
• Little Castle
• Ptuj Town Hall
• Ptuj Town Theatre
• Town Tower
• Dominican monastery
• Orpheus Monument
• Franciscan monastery
• Upper Mansion
• St. Oswald's Church