A lane partition line recognition apparatus for recognizing left-side and right-side lane partition lines of a traveling lane of a roadway in which a vehicle carrying the apparatus is traveling based on a forward image captured by a vehicle-mounted camera. The apparatus includes an offset detector configured to detect an offset amount indicative of a positional relationship between each of the left-side and right-side recognized lane partition lines and the vehicle and a predictor configured to, if only one of the left and right lane partition lines of the traveling lane of the subject vehicle is recognized, stochastically predict a position of the unrecognized one of the left and right lane partition lines based on the offset amount detected by the offset detector.