This study seeks to validate the cross‐cultural effectiveness of emotionally focused couple therapy (EFT) training in a sample of Spanish‐speaking clinicians. The 28‐hr formalized training for EFT was offered in six different Spanish‐speaking countries, covering Europe, North America, Central America, and South America. Two hundred and seven therapists of 14 different Spanish‐speaking nationalities completed pre‐training assessments, 153 of them completed post‐training assessments, and 92 therapists also completed the follow‐up assessment. Using multilevel growth modeling (MLM), results indicated that therapists experienced significant and positive changes in terms of EFT competence (knowledge and skill acquisition), mature empathy, self‐compassion, and attachment over time. Implications for transnational EFT training, specifically in Spanish‐speaking countries, are discussed.