| John Cornelius Williams Jr. | |
| Office: | Member of the South Carolina House of Representatives for Spartanburg County |
| Term Start: | 1969 |
| Term End: | 1974 |
| Birth Date: | 9 November 1938 |
| Birth Place: | Spartanburg, South Carolina |
| Party: | Democratic |
| Occupation: | lawyer |
John Cornelius Williams Jr. (born November 9, 1938) was an American politician in the state of South Carolina. He served in the South Carolina House of Representatives as a member of the Democratic Party from 1969 to 1974, representing Spartanburg County, South Carolina. He is a lawyer.[1]