A direction input device comprising: an input portion including an operated portion and a shaft that extends downward from the operated portion; a first slide portion that slides in a first direction in response to the input portion tilting from an initial position in the first direction, the first slide portion being provided with a first hole through which the shaft passes, the first hole extending in a second direction perpendicular to the first direction; a second slide portion that slides in the second direction in response to the input portion tilting from the initial position in the second direction, the second slide portion being provided with a second hole through which the shaft passes, the second hole extending in the first direction; a first slid surface that extends in the first direction, the first slid surface being in a shape curved convexly upward, the first slide portion sliding over the first slid surface as the first slide portion abutting on the first slid surface from below; a second slid surface that extends in the second direction, the second slid surface being in a shape curved convexly upward, the second slide portion sliding over the second slid surface as the second slide portion abutting on the second slid surface from below; and a slide biasing portion provided below the first slide portion and the second slide portion, the slide biasing portion biasing the first slide portion upward from below as pressing the first slide portion against the first slid surface and biasing the second slide portion upward from below as pressing the second slide portion against the second slid surface. an input portion including an operated portion and a shaft that extends downward from the operated portion; a first slide portion that slides in a first direction in response to the input portion tilting from an initial position in the first direction, the first slide portion being provided with a first hole through which the shaft passes, the first hole extending in a second direction perpendicular to the first direction; a second slide portion that slides in the second direction in response to the input portion tilting from the initial position in the second direction, the second slide portion being provided with a second hole through which the shaft passes, the second hole extending in the first direction; a first slid surface that extends in the first direction, the first slid surface being in a shape curved convexly upward, the first slide portion sliding over the first slid surface as the first slide portion abutting on the first slid surface from below; a second slid surface that extends in the second direction, the second slid surface being in a shape curved convexly upward, the second slide portion sliding over the second slid surface as the second slide portion abutting on the second slid surface from below; and a slide biasing portion provided below the first slide portion and the second slide portion, the slide biasing portion biasing the first slide portion upward from below as pressing the first slide portion against the first slid surface and biasing the second slide portion upward from below as pressing the second slide portion against the second slid surface.