A post-processing apparatus includes a binding tool configured to bind a sheet bundle, a binding tool driver, and control circuitry. The binding tool driver is configured to apply a driving force to move the binding tool to a first binding position at which the binding tool executes a first binding process on the sheet bundle and a second binding position different from the first binding position. At the second binding position, the binding tool executes a second binding process on the sheet bundle. The control circuitry is configured to cause the binding tool driver to move the binding tool to the first binding position at a first movement speed to execute the first binding process, and move the binding tool from the first binding position to the second binding position at a second movement speed slower than the first movement speed to execute the second binding process.