James Dudley Dewell (September 3, 1837 – April 19, 1906) was an American politician who was the 67th Lieutenant Governor of Connecticut from 1897 to 1899.

[1] James Dewell was born in Norfolk in Connecticut.

He joined the Republican Party and in 1896 he was elected to the office of the lieutenant Governor of Connecticut.

In this function he was the deputy of Governor Lorrin A. Cooke and he presided over the Connecticut State Senate.

James Dewell died in 1906 in New Haven where he had spent the most time of his life.