Retrograss is a bluegrass album by David Grisman, John Hartford and Mike Seeger.

For the 2000 Grammy Awards, Retrograss received a nomination for Best Traditional Folk Album .

[1] Writing for Allmusic, critic Brian Kelly wrote "All in all, these live, in-studio recordings are mirthful, rocking chair adaptations of American music history.

There are no breakneck solos, and the whole effort achieves more than the sum of its parts..."[1] Kevin Oliver of Country Standard Time wrote the "more radical reworkings are balanced out by some less revolutionary, but still intriguing versions of bluegrass tunes - Earl Scruggs, "Flint Hill Special," Jimmy Martin's "My Walking Shoes" and the omnipresent classic, "Uncle Pen."

With these more traditional tunes included, what could have been a mere novelty record becomes a fascinating study in the mutability of musical genres from another era.