This document provides an overview of competition law and principles in Latvia. It discusses key concepts like relevant market definition, prohibited agreements between market participants, and abuse of dominant market position. Specifically, it defines prohibited agreements as those that directly or indirectly fix prices, divide markets, or make contracts conditional on other obligations unrelated to the contract's subject. It also gives examples of abusive behavior by companies in dominant market positions, such as unfair price negotiations, sanctions for breaching agreements, and unjustifiably long payment periods. The document aims to educate readers on competition law and how it regulates interactions between businesses in Latvia.