Tanker may refer to:
This article lists the rolling stock that has featured in the Thomas & Friends children's television series.
A large number of different railway trucks and coaches have appeared over the years. In many episodes, coaches or trucks are key to the plot line. The engines prefer coaches, which are smooth-running and well-behaved. The trucks, on the other hand, are generally trouble.
The Coaches are pulled by engines to transport passengers from one station to another. The engines consider pulling passenger trains a privilege, although they have been known to anger or upset the coaches. The coaches talk generally to praise or scold the engine pulling them, and sometimes to complain about the conditions of their travel.
Annie and Clarabel are the two coaches who work with Thomas the Tank Engine on his branch line. Although they are old-fashioned, Thomas loves them very much and the three of them are quite inseparable. The coaches often offer advice to Thomas, and often appear more experienced than he is. Other characters have pulled them when Thomas was preoccupied, which usually makes Thomas upset as he worries for the coaches' safety.