The invention provides a cutting mechanism and a recording apparatus. The cutting mechanism (50) includes: a cutter blade that can cut a medium, a cutter unit (70) to which the cutter blade is attached, a first pinion gear (91) that is rotatably attached to the cutter unit, and a rack gear (64) that can mesh with the first pinion gear, in which the first pinion gear and the rack gear are configured with inclined teeth, and the cutter unit moves while the pinion gear is rotated in state of meshing the pinion gear and the rack gear.