William R. (Bill) Siddoway, age 96, peacefully completed his mortal journey on Sunday morning, May 3, 2026. He passed at home surrounded by family due to incidents of old age in Pleasant Grove, UT. He is now reunited with his beloved wife, Nila.

Bill was born in Vernal, Utah, to Ralph and Marsale (Eaton) Siddoway and was later joined by his brother, Lynn, and sister, Charyl. He graduated from Uintah High School in 1947, where he participated in track, drama, and band, especially enjoying the trumpet and playing in dance bands from his sophomore year on.

His summers were spent at the family cabin at Iron Springs on Diamond Mountain helping with the family sheep business, a place he loved deeply.

After marrying Nila Perry, Bill attended the University of Utah before serving in the U.S. Army beginning in 1952, achieving the rank of Sergeant. He later completed a B.S. degree in Management, Marketing, and Accounting at the University of Utah, followed by an MBA from Indiana University.

Bill taught business courses at San Jose State College before moving to Utah, where he spent more than 30 years at BYU in numerous leadership positions, including Dean of Admissions & Records, Dean of Continuing Education, Associate Dean in the Marriott School of Management, and Assistant to both the Academic Vice President and the President.

During his time at BYU, Bill and Nila served as Mission Leaders in the New York Rochester Mission, taking their four young children with them. He maintained lifelong relationships with many missionaries and continued holding reunions for 50 years, including one this past April.

Following retirement from BYU, Bill and Nila served a Public Affairs mission in Independence, Missouri, helping organize the Sesquicentennial wagon train reenactment commemorating the Saints’ trek to Utah. He later served at Utah Valley University as an advisor to the School of Business and Academic Advancement Vice President.

Throughout his life, Bill consulted for numerous businesses and organizations and authored articles, manuals, and educational materials in management, leadership, and higher education. He also faithfully served in many Church callings, including Bishop, Stake President, Mission President, and on the Church Missionary Committee.

Bill was preceded in death by his wife, Nila; his parents Ralph & Marsale Siddoway; his brother, Lynn; sister-in-law Kathleen Siddoway; and his sister, Charyl Siddoway.

He is survived by his children: David Siddoway; Robert (Cory) Siddoway; Jolyn (Brad) Robbins; and Michelle (Joe) Ison, along with 26 beloved grandchildren and spouses,19 great grandchildren and extended family members.

A viewing will be held Thursday, May 28, 2026, from 6–8 p.m. at Walker Sanderson Funeral Home, 646 East 800 North, Orem, Utah. Funeral services will be held Friday, May 29, 2026, at 11:00 a.m. at the Orchard Ward LDS Chapel, 828 South Locust Avenue, Pleasant Grove, Utah, with a viewing from 9:30–10:30 a.m. prior to services. Interment will follow at the Orem City Cemetery.