A frame (1) for a lawnmower vehicle which can be ridden by an operator is described, comprising at least one support frame (3, 4) comprising two side walls (320, 420) and an upper wall (380, 480) mounted on the two side walls (320, 420), which in turn are mounted integrally straddling two longitudinal rods (220) of a base platform frame (2) of the lawnmower vehicle, which are arranged parallel along a longitudinal axis (L), thus identifying a through opening (300, 400) along the longitudinal axis (L).
