Dudley George Roe (March 23, 1881 – January 4, 1970), a Democrat, was a U.S. congressman who represented the Maryland's 1st congressional district from 1945 to 1947.

Roe was born in Sudlersville, Maryland, and attended the public schools. He graduated from Washington College of Chestertown, Maryland, in 1903 and from the law department of the University of Maryland, Baltimore, in 1905, where he was admitted to the bar in 1905 and commenced practice. He was a member of the Maryland House of Delegates from 1907 to 1909 and of the Maryland Senate from 1923 to 1935 and from 1939 to 1943. He was the Democratic floor leader from 1939 to 1943. He was also a delegate to the Democratic National Convention in 1928.

Roe was elected as a Democrat to the Seventy-ninth Congress, from January 3, 1945, to January 3, 1947. He was an unsuccessful candidate for re-election in 1946 to the Eightieth Congress. After Congress, Roe worked as a farmer, banker and grain dealer in Sudlersville. He was a director and later the president of Sudlersville Bank of Maryland, until he resigned in 1967. He continued as chairman of the board of directors of the bank until his death in Chestertown. He is interred in Sudlersville Cemetery.