阿瑟·拉弗（英语：Arthur Betz Laffer 1940年8月14日－)，美国经济学家，南加州大学教授，供给面学派代表人物，他的一些主张尤其是减税被里根政府所采纳。

Arthur Betz Laffer (/ˈlæfər/; born August 14, 1940) is an American economist who first gained prominence during the Reagan administration as a member of Reagan's Economic Policy Advisory Board (1981–89). Laffer is best known for the Laffer curve, an illustration of the theory that there exists some tax rate between 0% and 100% that will result in maximum tax revenue for governments. He is the author and co-author of many books and newspaper articles, including Supply Side Economics: Financial Decision-Making for the 80s. Laffer is Policy Co-Chairman (with Lawrence "Larry" Kudlow) of the Free Enterprise Fund and serves on the "Board of Scholars" of the American Legislative Exchange Council (ALEC).