| Cover Page | Sep. 23, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K/A |
| Document Period End Date | Sep. 23, 2021 |
| Entity Registrant Name | Sio Gene Therapies Inc. |
| Entity Incorporation, State or Country Code | DE |
| Entity File Number | 001-37418 |
| Entity Tax Identification Number | 85-3863315 |
| Entity Address, Address Line One | 130 West 42nd Street |
| Entity Address, Address Line Two | 26th Floor |
| Entity Address, City or Town | New York |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10036 |
| Country Region | 1 |
| City Area Code | 877 |
| Local Phone Number | 746 4891 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, par value $0.00001 per share |
| Trading Symbol | SIOX |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
| Amendment Flag | false |
| Entity Central Index Key | 0001636050 |
