Sadie Grant Pack (December 20, 1877 – August 24, 1960) was the first counselor to May Anderson in the general presidency of the Primary of the Church of Jesus Christ of Latter-day Saints from 1925 to 1929.

She was educated at the University of Utah, where she met her future husband, Frederick J.

From 1904 to 1906 while her husband was a student at Columbia University, Sadie was president of the LDS Relief Society in New York and Brooklyn.

Pack held a variety of callings in the Relief Society, the Young Women's Mutual Improvement Association and the Primary prior to her call as first counselor in the general presidency of the Primary.

In 1925, when May Anderson was called as the general president of the Primary, she selected Pack as her first counselor.