A limiting connector for a knee brace has a first arm, a second arm and an angle adjusting assembly. The second arm is connected pivotally to the first arm. The angle adjusting assembly is mounted between the first arm and the second arm, and has a positioning gear, a gear cap, two buttons and a rotating cap. The gear cap is mounted through the positioning gear and the second arm, and is mounted on the first arm to hold the positioning gear between the second arm and the gear cap. The buttons are selectively slid to engage the positioning gear and define a range of rotation between the first and second arms. The rotating cap is rotatably mounted through the gear cap, and pushes the positioning gear toward the first arm to disengage the positioning gear from the buttons for adjusting the range of rotation.
