The Council of Europe has recognized the detention of migrant and refugee children as a harmful practice that violates the rights of detainees. In the 2016–2021 Strategy for the Rights of the Child, the Children’s Rights division of the Council of Europe provided guidance on child-friendly justice and rights of children in migration. Building on this effort, the Children’s Rights division will hold a training session on this topic, 28–29 March 2019, in Paris. The training will be organized in partnership with Defence for Children International – Belgium, using the previously developed Council of Europe methodology. Aimed at Ombudspersons and other professional authorities involved in fulfilling the rights of children in detention and/or migration, the hosts expect eleven member states to take part in the training: Albania, Croatia, Georgia, Ireland, Lithuania, Moldova, Poland, Serbia, Slovakia, Slovenia, and Ukraine. During the training, the handbook for frontline professionals, How to Convey Child-Friendly Information to Children in Migration, will also be presented.