This research is entitled "appointment of acting regional heads to face the 2024 simultaneous regional-head elections in the perspective of constitutional law". This research is considered urgent because there are numerous important aspects of the appointment of the Acting Regional Heads that need to be studied and analyzed, including the pros and cons of the absence of Government Regulations, the lack of transparency, openness, and accountability, as well as the pros and cos regarding the appointment of active members of the TNI and POLRI as acting regional heads. The problem is stated as follows: 1. How is the appointment of the acting Regional Heads to face the 2024 simultaneous regional head elections in the perspective of constitutional law? 2. How is the appointment of middle high leaders and Pratama high leaders who are members of the TNI and POLRI as acting Regional Heads according to statutory regulations? This research is a normative juridical research that employs primary, secondary, and tertiary legal materials. The method of collecting legal materials is carried out by literature study, while the method of processing legal materials is inventory, identification, categorization, and systematization of existing legal materials, and the analytical method used is a qualitative juridical method. The conclusions of the research are 1. the appointment of acting Regional Heads that has been carried out by the Government to face the 2024 regional head elections in a formal or textual juridical manner is in accordance with the provisions of Article 201 paragraph (10) and (11) of Law No. 10 of 2016 concerning the Election of Governors, Regents, and Mayors. However, in essence and substance, the appointment of the acting regional heads has violated the principles of constitutionalism contained in the 1945 Constitution of the Republic of Indonesia, namely the principle of the rule of law and the principle of a democratic state, the principle of legality, and regional autonomy. It also Failed to fulfill the principle of transparency, openness and accountability as contained in the principles of state administration and good governance. 2. The appointment of of middle high leaders and Pratama high leaders who come from active members of the TNI and POLRI as acting Regional Heads is a violation of Law Number 34 of 2004 concerning the TNI, Law Number 2 of 2002 concerning the Indonesian Police, Law Number 5 of 2014 concerning ASN and the decision of the Constitutional Court Number 15/PUU-XX/2022.