ARIFA partner Gian Castillero has been identified as one of Central America’s leading business lawyers since its 2019 edition. In 2025, Mr. Castillero has been included in the private clients chapter.

"Gian Castillero Guiraud is an experienced practitioner known for estate planning as well as the organisation and management of family offices." 

"Gian Castillero Guiraud has “a great practice”, extol market sources. He focuses his practice on estate management, tax planning and organisation of family offices." 

About Lexology Index: Central America

Lexology Index: Central America (formerly Who's Who Legal) is a comprehensive guide to the region's legal market. It provides an in-depth report on 13 areas of business law, with editorial analyses pinpointing the most highly regarded firms and individuals across Belize, Costa Rica, Dominican Republic, El Salvador, Guatemala, Honduras, Nicaragua and Panama.

“The publication has drawn on all our years of experience across a range of practice areas and months of fresh, independent research. The result is a comprehensive, ‘onestop’ referral source of Central America’s leading private practice lawyers.”