Dudley Pettibone Ely (November 16, 1817 – July 9, 1895) was the first mayor of South Norwalk, Connecticut, beginning in 1870, when the city was first incorporated.

[2][3][4][5] He was born in Simsbury, Connecticut, the youngest child of Benjamin Ely, a graduate of Yale College in 1786.

After a year, he went to New York City, to work with his brother as a bookkeeper, subsequently becoming his partner.

[3][4] Upon moving to South Norwalk, he became a banker, invested in real estate, becoming the largest landholder in the city.

[3][4] He was a large donor to the Children's Aid Society, and a member of the Congregational church of South Norwalk.