| i ett virrvarr | in a mess |
| i evighet | in perpetuity |
| I Faderns Namn | In the Name of the Father |
| i felaktigt perspektiv | out of perspective |
| i fin ordning | shipshape |
| i fjol | last year |
| i fjor | last year |
| i fjärran | in the distance |
| i flygande fart | hotfoot |
| i form | fit |
| i formandet | in the making |
| i fria luften | outdoors |
| i fråga | in question |
| i fråga om | concerning |
| i full fart | at full speed |
| i fullkomlig harmoni | in perfect harmony |
| i färd att | in the act of |
