Class 20

• 20 (disambiguation)
• British Rail Class 20
• GER Class D81
• JNR Class B20
• JŽ class 20
• Model 20 (disambiguation)
• NER Class R
• New South Wales Z20 class locomotive
• SNCB Class 20
• South African Class 20 2-10-2
• South African Class 20E
• Soviet locomotive class AA20
• Type 20 (disambiguation)
• U-20-class submarine