Mary Anne Aaron, 77, of Oklahoma City, Oklahoma, died on Thursday, December 30, 2021. She was born July 27, 1944, in Oklahoma City Mary Olive Aaron and Henry G. Aaron, Sr. As a lifelong devout Catholic, member of Our Lady's Cathedral, loving family member, friend, nurse and educator, she lived a life that was defined by giving. Mary Anne was a respected professional in the nursing and nursing education community. After graduating from Bishop John Carroll School and Bishop McGuinness Catholic High School, she earned multiple academic degrees beginning with a Diploma in Nursing from the St. Anthony School of Nursing in 1966. Shortly thereafter, she earned a Bachelor of Nursing Education from St. Mary's College in Xavier, Kansas. Upon graduation from St. Mary's, she returned to St. Anthony Hospital in Oklahoma City as an instructor in the School of Nursing, where she remained on the faculty for over 17 years. During that time, she also earned a MS in Nursing from the University of Oklahoma and a MA in Teaching at OCU. Beyond her 17 years on the St. Anthony faculty, she worked at St. Anthony's as a nurse and in nursing administration, also was an Associate Dean of Nursing at OCU/St. Anthony School of Nursing. Following her long tenure there, she served for many years as a nursing instructor at OSU-OKC. At OSU-OKC in 2000, she was awarded the L.E. "Dean" Stringer Award for Teaching Excellence. Aside from work, Mary Anne was an avid traveler and excelled in multiple creative pursuits including crafting, quilting and being a talented seamstress. Mary Anne was also active in Girl Scouts of America, serving as Leader of Senior Troop 91 and as the camp nurse at Red Rock Girl Scout Camp. She was survived by her brother, Henry G. Aaron, Jr and wife JoEllen; a sister, Patricia Aaron; nephew, Greg Aaron; niece, Laura Aaron-Nelson; nephew, Michael Aaron and their families; and her best friend, Susan Thurber, who cherished her company for decades and cared for her lovingly as her health deteriorated in recent years. Like Susan, her longtime friend, Cathy Howe, was a valued companion and caregiver. Mass of Christian Burial was celebrated at 2:30 p.m. on Wednesday, 5 January, at The Cathedral of Our Lady of Perpetual Help, Oklahoma City. Burial was held at Rose Hill Burial Park cemetery.