联合国善后救济总署（英语：United Nations Relief and Rehabilitation Administration，英文缩写：UNRRA）创立于1943年，发起人为美国总统罗斯福。其名称内之“联合国”并非指后来于旧金山组成的联合国，而是指于第二次世界大战期间的同盟国参战国家。

本质为福利机构的联合国善后救济总署，成立目的乃于战后统筹重建二战受害严重且无力复兴的同盟国参战国家。其中，受害最严重的中国成为最主要被帮助国家，而施予帮助者则为美国、英国与加拿大。

1946年4月20日，联合国成立国际难民组织，取代联合国善后救济总署。

The United Nations Relief and Rehabilitation Administration (UNRRA) was an international relief agency, largely dominated by the United States but representing 44 nations. Founded in 1943, it became part of the United Nations in 1945, and it largely shut down operations in 1947. Its purpose was to "plan, co-ordinate, administer or arrange for the administration of measures for the relief of victims of war in any area under the control of any of the United Nations through the provision of food, fuel, clothing, shelter and other basic necessities, medical and other essential services". Its staff of civil servants included 12,000 people, with headquarters in New York. Funding came from many nations, and totaled $3.7 billion, of which the United States contributed $2.7 billion; Britain $625 million and Canada $139 million.