0T

0T (zero T) or 0-T may refer to:


 * 0t, or Zero temperature, alternate term for absolute zero
 * One of several Whyte notations for steam locomotive classifications
 * 0-4-0T, variant of 0-4-0
 * 0-6-0T, variant of 0-6-0
 * Bristol and Exeter Railway 0-6-0T locomotives
 * List of preserved Hunslet Austerity 0-6-0ST locomotives
 * LMS Fowler Class 3F
 * GWR Sir Watkin Class
 * 0-10-0T, variant of 0-10-0
 * 2-4-0T, variant of 2-4-0
 * South Devon Railway 2-4-0 locomotives
 * Highland Railway O Class
 * 2-6-0T, variant of 2-6-0
 * 2-8-0T, variant of 2-8-0
 * 4-4-0T, variant of 4-4-0
 * Bristol and Exeter Railway 4-4-0T locomotives
 * 4-8-0T, variant of 4-8-0
 * South African Class 13 4-8-0T+T