A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
| I | Island, Isle |
| I of M | Isle of Man |
| I of W | Isle of Wight |
| IDT | Instrumental Detail Trace |
| IH | Inspection Hole? |
| Indpt | Independent |
| Indt | Independent |
| Infmy | Infirmary |
| Inft | Infant |
| ins | Inches |
| Inst | Institute |
| Instn | Institution |
| Int | Intersection/Intersected |
| Inver | Inverness-shire |
| IP | Iron Pipe |
| IR | Iron Rod |
| IRB Sta | Inshore Rescue Boat Station |
| Is of Sc | Isles of Scilly |
| Isoln Hospl | Isolation Hospital |
| Iss | Issues |
A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z