FSO (Fabryka Samochodów Osobowych) is a historic Polish automobile manufacturer established in 1951. It is known for producing iconic models such as the FSO Syrena and the FSO Polonez, which played a significant role in Poland’s automotive history. FSO specialized in manufacturing compact sedans and hatchbacks designed to meet local and regional market demands. Over the decades, the brand established a reputation for practical and durable vehicles. Although production ceased in the 2000s, FSO remains a symbol of Poland's automotive heritage with models that are still admired by enthusiasts.