I
| Title | Year | Notes on rating |
|---|---|---|
| Ice Cold in Phoenix | 2004 | later rated R for strong sexuality, brutal violence and language. |
| In the Cold of the Night | 1990 | edited version rated R. |
| In the Realm of the Senses (Ai no corrida) | 1976 (rated 1991) | |
| Inserts | 1975 | originally rated X; rating symbol changed to NC-17 in 1996 for explicit sexuality. |
| Inside Deep Throat | 2005 | for explicit sexual content; edited version rated R for strong sexuality including graphic images, nudity and dialogue. |
| Intent to Kill | 1993 (rated 1992) | for extreme violence. |
Read more about this topic: List Of NC-17 Rated Films