| Inebriating Mint | Red Scare Seed Company | | 80/20 | View variety |
| Infatuation | Sin City Seeds | | 60/40 | View variety |
| Inferno Haze | Gage Green Genetics | | 60/40 | View variety |
| Inferno Haze F2 | Gage Green Genetics | | 60/40 | View variety |
| Inferno OG (Space Force lineage, Desert King Mountain High Seed Co.) | Unknown | | Unavailable | View variety |
| Infidelity OG | Secret Society Seed Co | | 70/30 | View variety |
| Infinite Euphoria | Burning Bush Nurseries | | 40/60 | View variety |
| Infinity | Liberty Seeds | | 40/60 | View variety |
| Infinity And Beyond | Sunken Treasure Seeds | | 60/40 | View variety |
| Infinity Stone | Nerds Genetics | | 60/40 | View variety |
| Infrared | Tiger Trees | | 50/50 | View variety |
| Ingemar's Punch | De Sjamaan | | 40/60 | View variety |
| Inglewood Cookies | South Bay Genetics | | 60/40 | View variety |
| Inked Up Cherries | Elev8 Seeds | | 60/40 | View variety |
| Innervision | MassMedicalStrains | | 60/40 | View variety |
| Insane Chem 91 | Insane Seed Posse | | 80/20 | View variety |
| Insane in the Champagne | James Loud Genetics | | 50/50 | View variety |
| Insane OG | Barneys Farm | | 80/20 | View variety |
| Inside Joke | Compound Genetics | | 60/40 | View variety |
| Inside Peanut Butter Outside Jelly | Red Scare Seed Company | | 50/50 | View variety |