The work of parliament and ombudsman is of critical importance for democracy and the rule of law. Still, the relationship between these two institutions is considerably under-researched. This paper aims to contribute to filling this research gap by presenting a set of key criteria for the assessment of their relationship. These are applied in the analysis of the Serbian Parliament’s actions towards the Ombudsman in the first ten years of operations of this new institution in the Serbian legal and political system on the national level (2007–2016). Results show that the Parliament did not build consistent, predictable and efficient relations with the Ombudsman yet. Instead of being a supreme protector of the Ombudsman’s independence and it...