方格北（Grid North），也叫格网北、图网北、坐标北或网格北，是指地图投影上坐标纵轴（X轴）正向所指示的方向。与真北和磁北所指示的方向都不重合。

Grid north is a navigational term referring to the direction northwards along the grid lines of a map projection. It is contrasted with true north (the direction of the North Pole) and magnetic north (the direction in which a compass needle points). Many topographic maps, including those of the United States Geological Survey and Great Britain's Ordnance Survey, indicate the difference between grid north, true north, and magnetic north.