Donald Eaton Carr (October 17, 1903 – September 1986) was an American journalist, writer, environmentalist and research chemist. He was born in Los Angeles, California, on October 17, 1903. He obtained a science degree from University of California, Berkeley in 1930. In 1934 he married Mildred Clarke, From 1930 until 1947 he was a research chemist at the Union Oil Company. He wrote seven books, mostly about air and water pollution.