P-ISSN: 1412-6834 E-ISSN: 2550-0090 Volume 13, Issue 2, 2022, pp. 253-265 253 Article History Submitted 2 May 2021 - Revision Required 11 October 2022 - Accepted 24 December 2022 Business Competition Supervisory Institution: A Comparison between Indonesia and Thailand Ayup Suran Ningsih 1 1 Universitas Negeri Semarang, Indonesia ayuupp@mail.unnes.ac.id Abstract Introduction to The Problem: Competition is necessary in the business world; business actors are no stranger to competition between business actors in their business activities. It is done solely for profit. Indonesia establishes the Business Competition Supervisory Commission (KPPU) as a form of the state's presence in protecting business actors who have been honest in carrying out their business activities. Purpose/Objective Study: This research aims to conduct comparative research related to the duties and powers of the business competition supervisory institution in Indonesia and Thailand to provide recommendations on issues related to strengthening the role of KPPU in Indonesia. Design/Methodology/Approach: This type of research is empirical legal research. The study employed the primary data through interview with KPPU and data from a literature review and analyzed it through the statue approach. Findings: Based on studying Thai Competition Act and The Thai Fair-Trade Commission (TFTC), the authors conclude that Indonesia Anti-Monopoly Act and Komisi Pengawas Persaingan Usaha (KPPU) are more simply and comprehensive in regulating business competition. Thailand has more than one institution who handle the business competition, it is impressed more complicated and not integrated. Paper Type: Research Article Keywords: Business Competition; KPPU; Indonesia; Thailand; Competition Introduction Competition is necessary in the business world, business actors are no stranger to competition between business actors in conducting their business activities (Suci, 2017). It is done solely for profit. This competition can have a positive impact on the business world itself because this competition can encourage business actors to innovate on the products of goods and services that will be produced, and for the community/consumers from competition between business actors, they will benefit, among others, in the form of getting more choice of goods with guaranteed quality and reasonable price of goods (Permana, 2017). Competition occurs when several business actors engage in the same/ similar line of business, jointly running a company in operation (same marketing), each of whom makes maximum efforts to exceed the other to obtain maximum profit (Effendi,