A point lattice is a regularly spaced array of points. In the plane, point lattices can be constructed having unit cells in the shape of a square, rectangle, hexagon, etc. Unless otherwise specified, point lattices may be taken to refer to points in a square array, i.e., points with coordinates (m, n, ...), where m, n, ... are integers. Such an array is often called a grid or a mesh.

Barnes-Wall lattice | Blichfeldt's theorem | Browkin's theorem | circle lattice points | Coxeter-Todd lattice | Ehrhart polynomial | elliptic curve | Gauss's circle problem | golygon | integration lattice | Jarnick's inequality | lattice path | Leech lattice | Minkowski convex body theorem | modular lattice | N-cluster | Nosarzewska's inequality | Pick's theorem | random walk | Schinzel's theorem | Schröder number | torus | unit lattice | visible point | Voronoi polygon