The 55th parallel north is a circle of latitude that is 55 degrees north of the Earth's equatorial plane. It crosses Europe, Asia, the Pacific Ocean, North America, and the Atlantic Ocean.
At this latitude the sun is visible for 17 hours, 22 minutes during the summer solstice. It is visible for 7 hours, 10 minutes during the winter solstice.
This latitude is near the minimum latitude in which nautical twilight can last all night near the summer solstice.
The 55th parallel is the southern boundary of Nunavik territory in Quebec.

Starting at the Prime Meridian and heading eastwards, the parallel 55° north passes through: