| Honorific-Prefix: | The Honourable |
| Helm van Zijl | |
| Honorific-Suffix: | QC |
| Office1: | Judge of the Cape Provincial Division of the Supreme Court |
| Term Start1: | 1950 |
| Term End1: | 1975 |
| Office: | Judge President of the Cape Provincial Division |
| Term Start: | 1975 |
| Term End: | 1979 |
| Predecessor: | Theo van Wyk |
| Successor: | Jack Watermeyer |
| Birthname: | Jacobus Wilhelmus van Zijl |
| Birth Date: | 22 December 1909 |
| Birth Place: | Cape Town, Cape Colony |
| Alma Mater: | Stellenbosch University |
| Profession: | Advocate |
Jacobus Wilhelmus van Zijl QC (22 December 1909 – 22 January 1992) was a South African judge and Judge President of the Cape Provincial Division of the Supreme Court from 1975 until 1979.
Van Zijl was born in Cape Town, the son of justice, Hendrik Stephanus van Zyl and his wife, Dorothy Constantia Sauer.[1] He matriculated at Rondebosch Boys' High School, after which he studied law at the University of Stellenbosch.[2]
Van Zijl started practicing as an advocate in 1933 and became a member of the Cape Bar. In 1950 he was permanently appointed a judge to the Cape Provincial Division of the Supreme Court. After the death of Justice Theo van Wyk in 1975, he was appointed as Judge President of the Cape Division. [3]
In 1950, the South African government set up a Press Commission to monitor the activities of the press and van Zijl was appointed its first chairman.[4]