0T
# 0T

1T (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
