| Document And Entity Information | Aug. 19, 2021 |
| Document Information [Line Items] | |
| Entity, Registrant Name | GEOVAX LABS, INC. |
| Document, Type | 8-K |
| Document, Period End Date | Aug. 19, 2021 |
| Entity, Incorporation, State or Country Code | DE |
| Entity, File Number | 001-39563 |
| Entity, Tax Identification Number | 87-0455038 |
| Entity, Address, Address Line One | 1900 Lake Park Drive, Suite 380 |
| Entity, Address, City or Town | Smyrna |
| Entity, Address, State or Province | GA |
| Entity, Address, Postal Zip Code | 30080 |
| City Area Code | 678 |
| Local Phone Number | 384-7220 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity, Emerging Growth Company | false |
| Amendment Flag | false |
| Entity, Central Index Key | 0000832489 |
| CommonStockParValue0001PerShare Custom [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Common Stock, par value $0.001 per share |
| Trading Symbol | GOVX |
| Security Exchange Name | NASDAQ |
| WarrantsToPurchaseCommonStock Custom [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Warrants to Purchase Common Stock |
| Trading Symbol | GOVXW |
| Security Exchange Name | NASDAQ |
