Old Yeller is a fictional mixed-breed dog.

Old Yeller was introduced in the 1956 book, Old Yeller, by Fred Gipson (Frederick Benjamin Gipson ). The book won the Newbery Honor the following year and was made into a classic 1957 Disney film, Old Yeller, set in post-Civil War Texas. Most of the film consists of light-hearted scenes reminiscent of nature documentaries.

The dog which portrayed Old Yeller in the 1957 film was handled by famous Hollywood animal trainer Rudd Weatherwax.