A shift device for a transmission, the shift device comprising: a shift lever movable along a movement route; and a momentary type lever unit including the movement route, wherein the movement route is a two-terminal end bent route that is free from a three-way junction and includes two terminal ends, first and second bent portions arranged between the two terminal ends, a home position set at the first bent portion of the movement route, and a plurality of mode selection positions set at positions other than the first and second bent portions, wherein the momentary type lever unit automatically returns the shift lever to the home position, when released, wherein the shift lever is movable in a straight first shift direction including the home position, a second straight shift direction free from the home position and parallel to the first shift direction, and a straight selection direction including the home position and intersecting the first and second shift directions, the movement route extends from the home position toward the two terminal ends along an L-shaped route and a straight route, and the L-shaped route and the straight route extend from the home position in two intersecting directions, the plurality of mode selection positions includes a reverse mode selection position set in one of the L-shaped route and the straight route, a drive mode selection position set in the other one of the L-shaped route and the straight route, and a neutral selection position set between the home position and one of the two terminal ends, the shift lever is moved in opposite directions to the reverse mode selection position and the drive mode selection position, the shift lever is moved from the home position to just before the reverse mode selection position along one of the first and second shift directions, and the shift lever is moved from the home position to just before the drive mode selection position along the other one of the first and second shift directions. a shift lever movable along a movement route; and a momentary type lever unit including the movement route, wherein the movement route is a two-terminal end bent route that is free from a three-way junction and includes two terminal ends, first and second bent portions arranged between the two terminal ends, a home position set at the first bent portion of the movement route, and a plurality of mode selection positions set at positions other than the first and second bent portions, wherein the momentary type lever unit automatically returns the shift lever to the home position, when released, wherein the shift lever is movable in a straight first shift direction including the home position, a second straight shift direction free from the home position and parallel to the first shift direction, and a straight selection direction including the home position and intersecting the first and second shift directions, the movement route extends from the home position toward the two terminal ends along an L-shaped route and a straight route, and the L-shaped route and the straight route extend from the home position in two intersecting directions, the plurality of mode selection positions includes a reverse mode selection position set in one of the L-shaped route and the straight route, a drive mode selection position set in the other one of the L-shaped route and the straight route, and a neutral selection position set between the home position and one of the two terminal ends, the shift lever is moved in opposite directions to the reverse mode selection position and the drive mode selection position, the shift lever is moved from the home position to just before the reverse mode selection position along one of the first and second shift directions, and the shift lever is moved from the home position to just before the drive mode selection position along the other one of the first and second shift directions. the shift lever is movable in a straight first shift direction including the home position, a second straight shift direction free from the home position and parallel to the first shift direction, and a straight selection direction including the home position and intersecting the first and second shift directions, the movement route extends from the home position toward the two terminal ends along an L-shaped route and a straight route, and the L-shaped route and the straight route extend from the home position in two intersecting directions, the plurality of mode selection positions includes a reverse mode selection position set in one of the L-shaped route and the straight route, a drive mode selection position set in the other one of the L-shaped route and the straight route, and a neutral selection position set between the home position and one of the two terminal ends, the shift lever is moved in opposite directions to the reverse mode selection position and the drive mode selection position, the shift lever is moved from the home position to just before the reverse mode selection position along one of the first and second shift directions, and the shift lever is moved from the home position to just before the drive mode selection position along the other one of the first and second shift directions.