A coaxial connecter and a method for assembling the same are provided, in which there is little variation in the amount of holding an inner conductor between connection terminals and the connection between the inner conductor and the connection terminals is achieved with high reliability. The coaxial connector includes a housing, an inner contact, and an outer contact. The inner contact is secured to the housing and includes a conductor mounting portion and a conductor holding arm with a lock. The conductor holding arm is integrally formed with the conductor mounting portion. The outer contact is secured to the housing, as well. Either the housing or the conductor mounting portion is provided with a holding portion into which the lock is press-fitted when the conductor holding arm is folded toward the conductor mounting portion.