A connector for device configured to be attached to a device housing including a hole and configured to hold an electric wire inserted into the hole, the connector for device comprising: a tube-shaped housing into which the electric wire is insertable in a front-back direction and which is configured to be inserted into one end of the hole of the device housing; and a front holder configured to be engaged with one end of the tube-shaped housing, wherein the front holder includes an electric wire holding portion to which the electric wire is able to be held, wherein the electric wire holding portion is configured such that a binding band is capable of being wound around the electric wire holding portion to hold the electric wire, and a locking portion that is continuous with a front side of the electric wire holding portion and that is configured to be engaged with the tube-shaped housing, and wherein the electric wire holding portion is positioned inside the tube-shaped housing in a state where the locking portion is engaged with the tube-shaped housing, wherein the electric wire holding portion includes a holding portion body extending in the front-back direction and at least one electric wire supporting portion (412L, 412R) that is provided at the holding portion body and that projects from the holding portion body in such a way it projects toward the electric wire to support the electric wire when the electric wire is installed, and wherein, in a state where the electric wire is supported by the electric wire supporting portion (412L, 412R), the binding band can be wound around the holding portion body and around the electric wire such that the electric wire is held to the electric wire holding portion, characterized in that the electric wire supporting portion (412L, 412R) is formed in a plate shape that extends in a plane direction intersecting the front-back direction, and the electric wire supporting portion (412L, 412R) includes a recessed portion for accommodating the electric wire, the recessed portion being formed by cutting out an edge of the electric wire supporting portion (412L, 412R) located in a direction in which the electric wire supporting portion (412L, 412R) projects. a tube-shaped housing into which the electric wire is insertable in a front-back direction and which is configured to be inserted into one end of the hole of the device housing; and a front holder configured to be engaged with one end of the tube-shaped housing, wherein the front holder includes an electric wire holding portion to which the electric wire is able to be held, wherein the electric wire holding portion is configured such that a binding band is capable of being wound around the electric wire holding portion to hold the electric wire, and a locking portion that is continuous with a front side of the electric wire holding portion and that is configured to be engaged with the tube-shaped housing, and wherein the electric wire holding portion is positioned inside the tube-shaped housing in a state where the locking portion is engaged with the tube-shaped housing, wherein the electric wire holding portion includes a holding portion body extending in the front-back direction and at least one electric wire supporting portion (412L, 412R) that is provided at the holding portion body and that projects from the holding portion body in such a way it projects toward the electric wire to support the electric wire when the electric wire is installed, and wherein, in a state where the electric wire is supported by the electric wire supporting portion (412L, 412R), the binding band can be wound around the holding portion body and around the electric wire such that the electric wire is held to the electric wire holding portion, characterized in that the electric wire supporting portion (412L, 412R) is formed in a plate shape that extends in a plane direction intersecting the front-back direction, and the electric wire supporting portion (412L, 412R) includes a recessed portion for accommodating the electric wire, the recessed portion being formed by cutting out an edge of the electric wire supporting portion (412L, 412R) located in a direction in which the electric wire supporting portion (412L, 412R) projects.