Alan Gregg (1890–1957) was an American physician active in the fields of public health, medical education and research.

[6][9] During his career, he helped develop the United States' now predominant model for funding medical research.

[9][10] Rockefeller grants that he championed helped finance the development of sulfanilamide and penicillin,[6] some of the first antibiotic drugs.

[6] However, in 1956, after his retirement, he accepted a special Lasker Award that recognized his contributions to medicine.

[12][13] In 1958, after his death, the American Association of Medical Colleges inaugurated a lecture series named in his honor.