Below we cover the main competition law developments in Spain in 2023, concerning (i) institutions and legislation, (ii) antitrust, (iii) mergers, and (iv) State aid. The selection, as usual with these lists, is partly subjective.   Institutions and Legislation Royal Decree-Law 5/2023 Reforms the Spanish Competition Law On 29 June 2023, Royal Decree-Law 5/2023 approving…