Abstract: In a planetary speed change transmission wherein an input shaft is drivingly connected, by way of at least one of three planetary gear structures, to an output shaft five forward gears including a direct gear are obtained with three friction clutched and three friction brake structures. In one embodiment, a sixth forward gear is obtained by providing in one of the drive connections between two of the three planetary gear structures a disengageable clutch. In another embodiment, a sixth forward gear is obtained by auxiliary planetary gears which are engaged by an auxiliary ring gear that is connected to a fourth brake structure for locking the auxiliary ring gear. With this arrangement, a seventh forward gear and a second reverse gear can be obtained.