Audrey Stevens Niyogi (July 21, 1932 – February 28, 2010) was an American biochemist, best known as a co-discoverer of RNA polymerase.

When teenagers, Audrey and Ardyce boarded with a family in town so they could attend high school without the long commute.

[3] While a postdoctoral researcher at NIH, Audrey Stevens independently conducted original experiments demonstrating the synthesis of RNA in E. coli cells.

[3] In 1972, Stevens isolated a 10 kDa protein from E.coli infected with T4 bacteriophage which inhibited RNA polymerase.

[7] In 1998, Audrey Stevens Niyogi was elected to the National Academy of Sciences[8] in recognition of her many valuable contributions to the field of biochemistry.