A transmission (20, 120) for a hybrid vehicle (1, 101) includes a single planetary gear (30, 130) including a first element (31, 32, 33) connected to an output shaft (11a) of an internal combustion engine (11), a second element (31, 32, 33) of which a rotation is allowed and prohibited by engagement and disengagement of a brake (Brk), and a third element (31, 32, 33) being connectable and disconnectable relative to the first element by engagement and disengagement of a clutch (Clt), and a gear change mechanism (40, 140) including an input shaft (41) connected to the third element, an output shaft (42) connected to drive wheels, and plural gear sets (51, 52, 53, 54, 61, 62, 63, 64) including a minimum reduction ratio gear set (53, 63/52, 62), one of gears (63/62) of the minimum reduction ratio gear set being connected to the electric motor.