N55 may refer to:
Bus routes
editRoads
edit- N55 road (Ireland)
- Indus Highway, in Pakistan
- Romulo Highway, in the Philippines
Other uses
edit- BMW N55, an automobile engine
- HMS Undaunted (N55), a submarine of the Royal Navy
- Jaluit Airport, on Jaluit Atoll, Marshall Islands
- Nikon N55, a camera