Marion Isabelle Sims Spafford (née Smith; October 8, 1895 – February 2, 1982), known as Belle S. Spafford, was the ninth Relief Society General President of the Church of Jesus Christ of Latter-day Saints (LDS Church) from April 6, 1945, until October 3, 1974.

[3] In 1942, Spafford was called as second counselor to Relief Society president Amy B. Lyman, replacing Donna D.

During her tenure as Relief Society general president, the organization grew from just over 100,000 members to more than one million, spanning several dozen countries.

[9] The musical group grew to a 300-member chorus that, under the direction of Spafford, performed at the New York World's Fair and toured the United States and Great Britain.

[2] Spafford was a member of the National Council of Women of the United States, holding various positions during her 42-year membership.

[12] Serving in these positions, she became a notable national and international speaker, speaking as close to home as Idaho and as far away as Paris and Vienna.

[13] Despite being heavily involved with both the Relief Society and the National Council of Women, Spafford remained focused on special education and social work.

Spafford served as a member of the National Advisory Committee to the White House Conference on Aging.

Spafford was the first female member of the board of governors of the LDS Hospital in Salt Lake City.

[16] Spafford received the BYU Distinguished Service award in 1951, and was granted an honorary doctor of humanities degree in 1956.

[2] In 1982, the University of Utah established the Belle S. Spafford Endowed Chair in Social Work in her honor.

In addition, Belle Spafford was named to the Salt Lake Council Women's Hall of Fame.

[2] Spafford authored two books and co-authored one other: A Centenary of Relief Society, Women in Today's World, and A Woman's Reach.