In 1959, when Barbara L. Nichols reported for her first shift at Boston Children's Hospital, she was the only Black registered nurse on the entire staff. She died on July 22, 2026, the American Nurses Association announced, at the close of a career that made her the first Black president of a state nurses association and, later, of the ANA itself, the national organization for the profession.

Nichols was born in 1939 in Waterville, Maine, and raised in Portland. She trained at Massachusetts Memorial Hospital School of Nursing in Boston, one of only two Black students in her class, and went on to earn a bachelor's degree in nursing from Case Western Reserve University and a master's degree from the University of Wisconsin-Madison, according to the American Nurses Association.

After nursing school, Nichols joined the U.S. Navy Nurse Corps as a head nurse at the U.S. Naval Hospital in St. Albans, Queens, a post few Black women held at the time. She later settled in Wisconsin, working as a staff nurse at St. Mary's Hospital in Madison, the state that became the base for the rest of her career.

In 1970, Nichols was elected president of the Wisconsin Nurses Association, the first Black nurse to lead the organization, and served through 1972. She spent twelve years on the American Nurses Association's board of directors before being elected the organization's president in 1978, becoming the first Black person to hold that office. She was re-elected in 1980 and served two terms through 1982.

She went on to serve as secretary of the Wisconsin Department of Regulation and Licensing, the first Black woman to hold a cabinet-level post in the state. In 1999 she became chief executive officer of the Commission on Graduates of Foreign Nursing Schools, now known as CGFNS International, a post she held until 2011. There she developed the VisaScreen program with the U.S. Department of Homeland Security, the mechanism still used to certify internationally educated nurses and other health professionals for U.S. occupational visas, and in 2005 she established the International Centre on Nurse Migration with the International Council of Nurses. Over her career she wrote, edited, or published more than 200 papers and books on nursing and health care delivery, according to CGFNS International, which in 2017 named her its ninth International Distinguished Leadership Fellow. "I am enthralled and honored to be the CGFNS 2017 International Distinguished Leadership Fellow," she said at the time.

Nichols kept working well past the point most careers end, joining the Wisconsin Center for Nursing first as its diversity coordinator and then, from 2016 until her retirement in June 2025, as its executive director. The honors accumulated alongside the titles: Living Legend of the American Academy of Nursing in 2010, the University of Wisconsin-Madison's Outstanding Woman of Color award in 2018, induction into the ANA Hall of Fame in 2022, and in 2023 both the inaugural Canary Savage Girardeau Award for Health Equity, Diversity, and Inclusion from the UW-Madison School of Nursing and a Lifetime Achievement Award from the American Academy of Nursing. Dr. Kerri Kliminski, board president of the Wisconsin Center for Nursing, said on Nichols's retirement that her "leadership has not only supported the mission of the Wisconsin Center for Nursing, but it has also elevated the entire nursing profession across the state and nation," according to the Wisconsin Nurses Association.

Announcing her death, ANA President Jennifer Mensik Kennedy said Nichols "redefined nursing leadership as we know it," adding that "she played a pivotal role in shifting the profession from the margins to the center of health policy and equity, and she did it with grace, grit, and unmatched wisdom." Angela Beddoe, chief executive of the American Nurses Enterprise, said Nichols "reminded us that true leadership means seeing the unseen" and "spoke often about the honor of being invited into the most vulnerable moments of people's lives." In words the association included in its own tribute, Nichols had described nursing as "indeed a noble profession," adding: "We are there in people's moments of joy and trauma. That is a unique privilege. And because of that, our knowledge must match the depth of our responsibility."

Nichols spent more than six decades inside a profession she entered as the only Black nurse in the room. She left it with a state nurses association and a national one that had each elected a Black president for the first time because she ran, a visa screening system still used to clear internationally trained nurses to work in the United States, and more than 200 published papers and books that colleagues in health policy continued to draw on. The Wisconsin Center for Nursing inducted her into the ANA Hall of Fame in 2022, one of two nurses honored that year in Washington, D.C., for what the association called four decades of leadership in professional and health organizations. That leadership began at a hospital bedside in Boston in 1959, and it did not stop until she retired, in her mid-eighties, from the Wisconsin nursing organization she had spent the last decade of her working life building.