GDA

GDA may refer to:


 * Generic Design Assessment, UK assessment process for new nuclear reactor designs
 * Global Development Alliance, a program of the United States Agency for International Development
 * GNU Data Access, a software API specification
 * Golden Disc Awards, an annual South Korean major music awards ceremony
 * Gounda Airport, in the Central African Republic
 * Grand Democratic Alliance, a political alliance in Pakistan
 * Greater Dublin Area, a region of Ireland
 * Grupo de Diarios América, an international trade organization
 * Guideline Daily Amount in the United Kingdom
 * Gwadar Development Authority, in Gwadar, Pakistan
 * GDA (gene), which encodes the enzyme guanine deaminase