Disclosed is an impact dot head and an impact dot printer provided as not causing wire breakage by supporting a wire (8) performing a printing operation so as to be resiliently oscillatable in a printing digit direction even if the impact dot head starts printing from a position outside a printing sheet (19) due to erroneous setting of a printing area and therefore passes an end of the printing sheet while performing the printing operation. The wires (8) are guided by a front end guide (6) disposed in a nose guide (18) in a nose (1). There are a number of ways disclosed of supporting the wires (8) in a resiliently oscillatable manner including a resiliently oscillatable nose guide, nose and a front end guide.