PROBLEM TO BE SOLVED: To provide a connection device capable of surely connecting an information transmission cable by preventing occurrence of biting in the connection device, and an imaging device including the connection device.SOLUTION: The connection device includes a guide member 50 which is provided with two guide follower surfaces 51A and 51B formed along different directions with a central axis CL as a center, a first magnet M1 which is arranged at a connector fixing member 1405, and a second magnet M2 which is fixed to an adapter fixing member 1603 and generates a magnetic force between the first magnet for preventing a projection part 1550 of the connector fixing member 1405 from reaching tip ends of the two guide follower surfaces 51A and 51B when the connector fixing member 1405 is inserted into the guide member 50.SELECTED DRAWING: Figure 6COPYRIGHT: (C)2016,JPO&INPIT【課題】接続装置において噛み込みが生じないようにして、情報伝達ケーブルの接続を確実に行うことができる接続装置およびその接続装置を備えるイメージング装置を提供する。【解決手段】接続装置は、中心軸CLを中心にして異なる方向に形成された2つの案内倣い面51A,51Bが、ガイド部材50に設けられ、コネクタ固定部材1405に配置された第1マグネットM1と、アダプタ固定部材1603に固定されガイド部材50にコネクタ固定部材1405を挿入する際に、コネクタ固定部材1405の突起部1550が2つの案内倣い面51A,51Bの先端部に達するのを回避するための磁気的な力を、第1マグネットとの間で発生する第2マグネットM2を有する。【選択図】図6