A case of a 28-year-old gravida 3 para 2 woman with an ileal penetration by an intrauterine device (IUD) is reported. Four weeks following insertion of a Multiload-Cu 375, the woman underwent laparotomy due to persistent vague abdominal pain and translocation of the IUD. The device had perforated the fundal uterine wall and the two flexible side arms and the copper-bearing rod had completely eroded into the wall of the ileum with only the strings protruding outside the small bowel mesentery. Resection of an ileal segment with end-to-end anastomosis was performed. The woman made an uneventful recovery. It appears that a translocated Multiload-Cu 375 IUD body can penetrate and be entirely embedded within the bowel wall as early as 4 weeks following translocation. This report documents the shortest interval between insertion and proven bowel injury by an IUD.