A robot comprising: a robot main body including an A-arm which is rotatable around an A-rotation axis (O4), a B-arm which is cantilevered off the A-arm and is rotatable around a B-rotation axis (O5), and a C-arm which is connected to the B-arm and which is rotatable around a C-rotation axis (O6), wherein an end effector is attached to the C-arm , the B-arm includes a hole through which a flexible wiring or pipe connected to the end effector is inserted, and the C-arm includes a through-hole which penetrates the C-arm along the axial direction of the C-rotation axis (O6) and through which the flexible wiring or the pipe is inserted, characterized in that the B-arm includes a first portion connected to the A-arm and a second portion including the hole , and the first portion and the second portion are connected so that both ends of the hole open to the outside, a regulation portion functioning as a mechanical stopper for regulating the rotation of the B-arm with respect to the A-arm is provided at a connection portion between the first portion of the B-arm and the A-arm , the A-arm includes a first regulation member that is not exposed to the outside of the robot main body , the B-arm includes a second regulation member that is not exposed to the outside of the robot main body and contacts the first regulation member , the regulation portion is configured to include the first regulation member and the second regulation member , a clamp portion is provided in the first portion of the B-arm and is configured to regulate a position of the flexible wiring or pipe connected to the end effector , in a case where the B-arm rotates around the B-rotation axis (O5), the first regulation member and the second regulation member contact each other to regulate rotation of the B-arm with respect to the A-arm , and the through-hole included in the C-arm , the hole included in the B-arm , and the clamp portion are provided side by side along the axial direction of the C-rotation axis (O6). a robot main body including an A-arm which is rotatable around an A-rotation axis (O4), a B-arm which is cantilevered off the A-arm and is rotatable around a B-rotation axis (O5), and a C-arm which is connected to the B-arm and which is rotatable around a C-rotation axis (O6), wherein an end effector is attached to the C-arm , the B-arm includes a hole through which a flexible wiring or pipe connected to the end effector is inserted, and the C-arm includes a through-hole which penetrates the C-arm along the axial direction of the C-rotation axis (O6) and through which the flexible wiring or the pipe is inserted, characterized in that the B-arm includes a first portion connected to the A-arm and a second portion including the hole , and the first portion and the second portion are connected so that both ends of the hole open to the outside, a regulation portion functioning as a mechanical stopper for regulating the rotation of the B-arm with respect to the A-arm is provided at a connection portion between the first portion of the B-arm and the A-arm , the A-arm includes a first regulation member that is not exposed to the outside of the robot main body , the B-arm includes a second regulation member that is not exposed to the outside of the robot main body and contacts the first regulation member , the regulation portion is configured to include the first regulation member and the second regulation member , a clamp portion is provided in the first portion of the B-arm and is configured to regulate a position of the flexible wiring or pipe connected to the end effector , in a case where the B-arm rotates around the B-rotation axis (O5), the first regulation member and the second regulation member contact each other to regulate rotation of the B-arm with respect to the A-arm , and the through-hole included in the C-arm , the hole included in the B-arm , and the clamp portion are provided side by side along the axial direction of the C-rotation axis (O6). <EOS>