James P. Dugan (born July 4, 1929) is an American Democratic Party lawyer and politician who served in the New Jersey Senate and as chairman of the New Jersey Democratic State Committee.
Dugan served in the Korean War as a captain in the United States Marine Corps. After the war he studied at Fordham University Law School, receiving a J.D. degree in 1957. He was admitted to the New York Bar in 1957 and the New Jersey Bar in 1959.
Dugan was elected to the State Senate in 1969, serving for eight years. In 1973 he was named chairman of the Senate Judiciary Committee. Also in that year he was selected as chairman of the New Jersey Democratic State Committee and helped nominate Brendan Byrne for Governor of New Jersey, though he would later become a critic of Byrne. Dugan stepped down from the party chairmanship in 1977 and also lost his Senate seat that year in a primary challenge.
Dugan joined the New Jersey law firm Waters, McPherson, McNeill in 1994. He has resided in Bayonne and Saddle River.