An endoscope 2 has an insertion section 21. The insertion section 21 includes a bending section 213 being bendable, a tube 27 disposed in the bending section 213 to allow a treatment tool 26 to be inserted into the tube, and a hard member 212 connected to the bending section 213 on a distal end side of the insertion section 21. The hard member 212 includes a treatment tool passage 2122, and a connection section 28 having a cylindrical shape being communicated with the treatment tool passage 2122, and connected to the tube 27 to cause the treatment tool passage 2122 and the tube 27 to communicate with each other. The connection section 28 includes a projecting portion 282 fitted into the tube 27. The projecting portion 282 is deviated from a virtual line extending from a central axis in a direction opposite to a first direction being a bending direction of the bending section 213, when viewed from a direction parallel to the central axis of the connection section 28.
