| Honorific-Prefix: | Sir |
| William Coke | |
| Office: | Puisne Justice of the Supreme Court of Ceylon |
| Term Start: | 28 October 1810 |
| Term End: | 1 September 1818 |
| Successor: | Henry Byrne |
| Office1: | Provisional Chief Justice of Ceylon |
| Term Start1: | 6 March 1809 |
| Term End1: | 1811 |
| Nominator1: | Edmund Henry Lushington |
| Appointer1: | Alexander Johnston |
| Order2: | 4th |
| Office2: | Advocate Fiscal of Ceylon |
| Term Start2: | 5 September 1808 |
| Term End2: | 1811 |
| Predecessor2: | James Dunkin |
| Successor2: | Ambrose Hardinge Giffard |
| Birth Date: | 1776 |
| Birth Place: | England |
| Death Date: | 1 September 1818 |
| Death Place: | Trincomalee, British Ceylon |
| Alma Mater: | Christ Church, Oxford, University of Oxford |
Sir William Coke (1776 - 1 September 1818) was a Puisne Justice of the Supreme Court of Ceylon as well as acting as Provisional Chief Justice of Ceylon and the fourth Advocate Fiscal of Ceylon.
Coke arrived in Ceylon on 15 September 1808. He was appointed on 5 September 1808, succeeding James Dunkin, and held the office until 1811. He was succeeded by Ambrose Hardinge Giffard.[1]
Coke died of dysentery when in Trincomalee for a Criminal Session.[2]