Danforth Emmit Ainsworth (November 29, 1848 – October 25, 1927) was an American lawyer and politician from New York.

Shortly after his birth, the family moved to Sandy Creek, where his father owned a farm.

[1] After graduating from Union University, Ainsworth began studying law under Henry L. Howe of Oswego.

[3] In 1885, Ainsworth was elected to the New York State Assembly as a Republican, representing the Oswego County 2nd District.

[2] Ainsworth died at home on October 25, 1927, 6 months after his wife Annie's death from pneumonia.