Pachykellya is a genus of very small saltwater clams, marine bivalve molluscs in the family Neoleptonidae.
Species Species in the genus Pachykellya include: Pachykellya bernardi Powell, 1927 Pachykellya concentrica Powell, 1927 Pachykellya edwardsi Bernard, 1897 Pachykellya minima Powell, 1931 Pachykellya rotunda Powell, 1927
References Powell A. W. B., New Zealand Mollusca, William Collins Publishers Ltd, Auckland, New Zealand 1979