T. D. Judah was the name of a 4-2-2 steam locomotive owned by the Central Pacific Railroad.

Like its sister engine, C. P. Huntington, T. D. Judah was originally built by the Cooke Locomotive Works in 1863 for a railroad that was unable to pay for it.

Later, the two were seen in the Cooke shops by Collis Huntington and purchased for use on the Central Pacific Railroad (CP), becoming the road's third and fourth locomotives respectively.

Originally built as a 4-2-4T Forney type, T. D. Judah was a locomotive and tender on one frame.

T. D. Judah was sold to the Wellington Colliery Company on Vancouver Island, British Columbia, Canada, where it found service as Wellington Colliery Railway's Queen Anne.