A leaning vehicle that is configured to lean leftward when turning to the left and to lean rightward when turning to the right, the leaning vehicle comprising: a vehicle body; a plurality of wheels (3, 4) including a front wheel and a rear wheel; a driving source configured to supply a driving force to at least one of the front wheel or the rear wheel; a gear-type multi-stage automatic transmission (12, 312) including a plurality of gear stages and a clutch (40, 340, 360), and configured to change the driving force to be transferred from the driving source to at least one of the front wheel or the rear wheel by automatically changing the plurality of gear stages stepwise; a lean angular velocity detector configured to detect a lean angular velocity while the vehicle body leans leftward or the vehicle body leans rightward; an accelerator operator to which an input operation for controlling an output of the driving source may be performed; and a multi-stage automatic gear-shift controller (7, 107, 307) configured to control changing of the plurality of gear stages in the multi-stage automatic transmission (12, 312) and to control the output of the driving source in accordance with the input operation to the accelerator operator, characterized in that the multi-stage automatic gear-shift controller (7, 107, 307) is configured to change the output of the driving source in accordance with an operation amount of the accelerator operator, while holding a gear stage in the multi-stage automatic transmission (12, 312), based on a vehicle state where it is predicted that the leaning vehicle changes from a leftward lean state to a rightward lean state through a state where a lean angle obtained from a lean angular velocity detected by the lean angular velocity detector is zero degrees or a vehicle state where it is predicted that the leaning vehicle changes from the rightward lean state to the leftward lean state through the state where the lean angle is zero degrees. a vehicle body; a plurality of wheels (3, 4) including a front wheel and a rear wheel; a driving source configured to supply a driving force to at least one of the front wheel or the rear wheel; a gear-type multi-stage automatic transmission (12, 312) including a plurality of gear stages and a clutch (40, 340, 360), and configured to change the driving force to be transferred from the driving source to at least one of the front wheel or the rear wheel by automatically changing the plurality of gear stages stepwise; a lean angular velocity detector configured to detect a lean angular velocity while the vehicle body leans leftward or the vehicle body leans rightward; an accelerator operator to which an input operation for controlling an output of the driving source may be performed; and a multi-stage automatic gear-shift controller (7, 107, 307) configured to control changing of the plurality of gear stages in the multi-stage automatic transmission (12, 312) and to control the output of the driving source in accordance with the input operation to the accelerator operator, characterized in that the multi-stage automatic gear-shift controller (7, 107, 307) is configured to change the output of the driving source in accordance with an operation amount of the accelerator operator, while holding a gear stage in the multi-stage automatic transmission (12, 312), based on a vehicle state where it is predicted that the leaning vehicle changes from a leftward lean state to a rightward lean state through a state where a lean angle obtained from a lean angular velocity detected by the lean angular velocity detector is zero degrees or a vehicle state where it is predicted that the leaning vehicle changes from the rightward lean state to the leftward lean state through the state where the lean angle is zero degrees.