21st-century American women scientists

Mary Elizabeth Tidball (née Peters; October 15, 1929 – February 3, 2014) was an American physiologist. She was an advocate for women in academia and STEM and a supporter of women's colleges. Tidball was a longtime faculty member at George Washington University School of Medicine & Health Sciences (GW) where she became the institution's first woman appointed professor of physiology. Her research in the 1960s on the career outcomes of graduates from women's colleges versus those from coeducational institutions sparked discussions that continued for decades. Tidball was the first female president of the Cathedral Choral Society where she sang for almost fifty years.

Isabella Aiona Abbott (June 20, 1919 – October 28, 2010) was an educator, phycologist, and ethnobotanist from Hawaii. The first native Hawaiian woman to receive a PhD in science, she became a leading expert on Pacific marine algae.

Helen Matusevich Oujesky (August 14, 1930 – February 1, 2010) was an American professor of microbiology at the University of Texas, San Antonio. In this capacity she actively pursued environmental research on pollution of soil and water, particularly of toxic wastes.In her career span of 45 years in the field of education and research, Oujesky was the recipient of several awards such as from the National Science Foundation, Student Science Training Programs for High School Students, Minority Research Programs for Minority High School Students, and an Intervention Model Program for Girls Using Laboratory Activities in Science, Math and Engineering. On 30 January 1997, her name was incorporated in the Texas Women's Hall of Fame.