List of highways numbered S1

China

• S1 Expressway
• S1 [Zhengzhou Airport Expressway|S1 Expressway (Henan)]
• S1 Expressway
• S1 Expressway
• S1 Expressway (Shanghai)
• S1 Expressway
• S1 Expressway (Tianjin)
• Lhasa [Airport Expressway|S1 Expressway (Tibet)]
• S1 Expressway

Georgia

• S1 [highway (Georgia)|S1 Highway]

Poland

• Expressway S1 (Poland)

United States

• New [Jersey Route S1]