Harry Willis Miller (July 1, 1879 – January 1, 1977) was an American physician, thyroid surgeon and Seventh-day Adventist missionary.

[2][3] Miller studied at Rush Medical College and authored an article on blastomycetes in the Journal of Dermatology in 1903.

[3] With Arthur Selmon, he established The Gospel Herald, which was renamed to Chinese Seventh-Day Adventist Press.

It was moved to Shanghai in 1909, and in 1911 was renamed to the Signs of the Times Publishing House.

He was medical director of Mount Vernon Hospital and established the International Nutrition Laboratory to produce soy products.

[4] With his son he formed the International Nutrition Foundation on a 140-acre farm in Mount Vernon.

[3] He sold his factory, land, and soy milk products to Loma Linda Foods in 1951.

[8] However, Miller continued to conduct research in at Loma Linda Food factory in La Sierra until his death.