John David Clifford Jr. (May 15, 1887 – November 18, 1956) was a United States district judge of the United States District Court for the District of Maine.

- Gender
- Male
- Race
- White
Prior employment
- Private practice, Lewiston, Maine1914–1947
U.S. attorney for the District of Maine1933–1947- MaineState representative · 1915–1916
Appointments
1947–1956 · Appointed by Harry S Truman (Democratic)Term ended: Death
Education
- Georgetown College Law School (now Georgetown University Law Center)LL.B. · 1913
- Bowdoin CollegeA.B. · 1910