| Cover | Aug. 30, 2022 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Aug. 30, 2022 |
| Entity File Number | 1-32955 |
| Entity Registrant Name | HOUSTON AMERICAN ENERGY CORP. |
| Entity Central Index Key | 0001156041 |
| Entity Tax Identification Number | 76-0675953 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 801 Travis Street |
| Entity Address, Address Line Two | Suite 1425 |
| Entity Address, City or Town | Houston |
| Entity Address, State or Province | TX |
| Entity Address, Postal Zip Code | 77002 |
| City Area Code | 713 |
| Local Phone Number | 222-6966 |
| 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 $0.001 per share |
| Trading Symbol | HUSA |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
