To provide a polyoxymethylene resin composition which can give a molding having excellent impact resistance as well as unimpaired appearance, to provide a molding thereof, and to provide a part made therefrom.

The resin composition is a polyoxymethylene resin composition wherein (A) the constituent polyoxymethylene resin comprises 100 to 50 wt. % (a-1) hydroxyalkyl-terminated polyoxymethylene copolymer and 0 to 50 wt. % (a-2) oxymethylene resin, 5 to 60 pts.wt. (B) modified olefin polymer and 0 to 10 pts.wt. (C) lubricant are contained per 100 pts.wt. total weight of the above components, and at least 60% of the dispersed particles of component (B) have breadths of at most 3 μm.