Thomas & Friends series 12

Thomas & Friends is a children's television series about the engines and other characters working on the railways of the Island of Sodor, and is based on The Railway Series books written by Wilbert Awdry.

This article lists and details episodes from the twelfth series of the show, which was first broadcast from 1 September to 26 September 2008, making it the second season to be aired in less than a month.

Most episodes in this series have two titles: the titles from the UK broadcasts are shown on top, while the American-adapted titles are shown underneath.

This was the only season to feature the mixing of live-action and animation; by the following year, the series had transitioned to full CGI.

This was also the last season to utilize the live-action model animation of the show and animated by Nitrogen Studios before switching over to full CGI in 2009, starting with Hero of the Rails.

This was also the last series to utilize the Island of Sodor intro from the start of the UK broadcasts. From series 13–16, the CGI version of the Island of Sodor intro is used at the start of the US broadcasts.