Abstract: A robot controller includes: a movement controller moving a robot arm including a hand; and an opening/closing controller opening and closing at least one of fingers included in hand in a predetermined direction. The movement controller causes the robot arm to bring at least one of the fingers into contact with a workpiece in a pressing direction. The opening/closing controller causes the at least one of the fingers to perform an opening action after the contact action. After the at least one of the fingers separates from the workpiece through the opening action, the movement controller causes the robot arm to perform an approaching action of moving the hand in the pressing direction to a holding position. The opening/closing controller causes the fingers to hold the workpiece by causing at least one of the fingers to close in a state where the hand is located at the holding position.