This chapter examines the tribunals’ detention facilities’ procedures for imposing disciplinary punishment. First, the principles underlying such systems and the standards such systems must comply with are set out. Following this, the disciplinary systems established at the various tribunals are described in detail. In the evaluation paragraph, it is argued inter alia that the recommendation made in Chap. 5 to establish an external adjudicator’s office also applies to the tribunals’ disciplinary procedures. This recommendation is made on the basis of (i) the right to a fair trial (and the corresponding ECtHR case law) and the right to an effective remedy; (ii) the advantages of disciplinary decisions being made by someone who is not part of the institution’s management and (iii) the particularities of the international context.