An endoscope includes: a long member that is connected to a direction changing portion provided in an insertion portion and enables the direction changing portion to move； a sliding member that includes a first contact portion that is brought into contact with an inner surface of a guide tube that allows insertion of the long member and a second contact portion that is brought into contact with the inner surface of the guide tube； a flow path that includes an opening portion formed in a direction that intersects a longitudinal axis of the sliding member such that a fluid flows into a clearance between the guide tube and the sliding member； and an operation member that causes the sliding member to move forward and backward relative to the guide tube.
