Sublinear or sub-linear means 'below linear' or 'less than linear', and may refer to:

Sublinear function, a function from a vector space to the real numbers, that is positive-homogeneous and subadditive; all linear functions are also sublinear Sub-linear time, a time complexity of o(n), faster than linear Sublinear convergence / converging sublinearly, approaching a limit slower than linearly

See also Sub (disambiguation) Linear (disambiguation) Semilinear (disambiguation) Quasilinear (disambiguation) Nonlinearity (disambiguation)