Posted in Business & Finance, Government & Military, Information Technology, Organizations, Science DIRF stands for Declaração do Imposto de Renda Retido na Fonte (Portuguese: Statement of Income Tax Withheld at Source) DIRF stands for Digital Information Research Foundation (India) DIRF stands for Dansk Investor Relations Forening (Danish organization) DIRF stands for Differential Interest Rate Fix (contracts) DIRF stands for Délégation Interrégionale au Recrutement et a la Formation (French: Delegation to Inter Recruitment and Training) DIRF