This 2025 edition of the OECD Competition Trends report highlights worldwide competition enforcement trends during the calendar year 2023 based on 69 jurisdictions. Similar to previous editions, this year's report identifies trends over time. Analyses focus on enforcement activity in cartels, abuse of dominance cases, mergers and advocacy activity. Moreover, this year's edition includes a special chapter on the evolution of competition authorities' resources, exploring potential reasons for the overall increasing trend for average budgets and staff dedicated to competition. The report contributes to continuously improving competition law and policy around the world.