Are the lens on the EOS 10D and EOS Rebel T6 Digital SLR Camera interchangeable?
EF Lenses that fit the 10D will fit on the T6, but EF-S lenses that will fit the T6 will not work on the 10D.
The 10D is an odd duck. It is a crop sensor camera but it was made before ef-s lenses were made so they do not fit it. The Rebel T6 can use either mount. So, yes any lens that fit a 10D will fit on a T6.