0T

• 0-10-0
• 0-4-0
• 0-6-0
• 2-4-0
• 2-6-0
• 2-8-0
• 4-4-0
• 4-8-0
• Bristol and Exeter Railway 0-6-0T locomotives
• Bristol and Exeter Railway 4-4-0T locomotives
• GWR Sir Watkin Class
• Highland Railway O Class
• LMS Fowler Class 3F
• List of preserved Hunslet Austerity 0-6-0ST locomotives
• OT (disambiguation)
• South African Class 13 4-8-0T+T
• South Devon Railway 2-4-0 locomotives
• T0 (disambiguation)