John Clark Knox (October 13, 1881 – August 23, 1966) was a United States district judge of the United States District Court for the Southern District of New York from 1918 to 1966 and its first chief judge from 1948 to 1955.

John Clark Knox
New York Southern District Court
Chief Judge — U.S. District Court for the Southern District of New York
Born 1881 in Waynesburg, PA
Died 1966
FJC ID: 1301
- Gender
- Male
- Race
- White
Prior employment
Assistant U.S. attorney · 1913–1918- Law Department, Title Guarantee and Trust Company, New York CityAttorney · 1905–1913
Appointments
1918–1966 · Appointed by Woodrow Wilson (Democratic)Term ended: Death
Education

- Read law1904
- Waynesburg CollegeA.B. · 1902