| Cover | Feb. 24, 2022 |
| Cover [Abstract] | |
| Entity Registrant Name | Cosmos Holdings Inc. |
| Entity Central Index Key | 0001474167 |
| Document Type | 8-K |
| Amendment Flag | false |
| Current Fiscal Year End Date | --12-31 |
| Entity Emerging Growth Company | false |
| Document Period End Date | Feb. 24, 2022 |
| Entity File Number | 000-54436 |
| Entity Incorporation State Country Code | NV |
| Entity Tax Identification Number | 27-0611758 |
| Entity Address Address Line 1 | 141 West Jackson Blvd |
| Entity Address Address Line 2 | Suite 4236 |
| Entity Address City Or Town | Chicago |
| Entity Address State Or Province | IL |
| Entity Address Postal Zip Code | 60604 |
| City Area Code | 312 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Local Phone Number | 865-0026 |
| Security 12b Title | Common Stock, $.001 par value |
| Trading Symbol | COSM |
| Security Exchange Name | NASDAQ |
