A fixture structure for an in-vehicle electronic apparatus includes an in-vehicle electronic apparatus fixture bracket through which an in-vehicle electronic apparatus is attached to a vehicle body. The in-vehicle electronic apparatus fixture bracket includes a retreat structure part allowing the in-vehicle electronic apparatus to retreat toward the front of the vehicle body when a dynamic load is inputted into the in-vehicle electronic apparatus. The retreat structure part includes: a hinge part allowing a lower portion of the in-vehicle electronic apparatus fixture bracket to rotate together with the in-vehicle electronic apparatus, toward the front of the vehicle body about an upper portion of the in-vehicle electronic apparatus fixture bracket; and a rotational displacement accepting part allowing the lower portion of the in-vehicle electronic apparatus fixture bracket to be displaced due to its own rotation toward the front of the vehicle body.