The first mother.
Eve
Overcame generations of evil traditions by making a covenant of peace with God. Their sons famously fought under Helaman and not one died.
Mothers of the Stripling Warriors
Wife of the prophet Joseph Smith. Compiled the first hymnal of the church, and was founding president of the Relief Society.
Emma Smith
Laughed when she was told she would have a baby at the age of 90.
Sarah
Mother of John the Baptist, whom she named in place of her husband who was mute until he was named.
Elizabeth
Married to the sons of Lehi. Some of these women's supplications helped to save Nephi and keep the peace. Together their posterity included all of the Nephites and Lamanites.
Daughters of Ishmael
Mother to the prophet Joseph Smith and author of his most authoritative memoir.
Lucy Mack Smith
Promised the Lord that if she had a son, he would serve God "all the days of his life". Her son was the prophet who anointed David as king.
Hannah
Woman on whom Jesus had compassion and brought her only son back to life upon seeing his funeral procession.
Widow of Nain
Trusted in Ammon's words with incredible faith, and had an overwhelming experience with the Spirit which caused her to faint and be born again.
Didn't think her husband stinks.
Wife of King Lamoni
During a famine in Israel, this woman took care of her widowed mother in law rather than return to a life of comfort. Her name has come to mean compassion.
Ruth & Naomi
Unnamed mother-in-law healed by Jesus of a great fever, and then promptly starts cooking for all the visitors in her house.
Peter's Mother in Law
Suffered death by fire with their children after confessing their belief in Alma and Amulek's teachings.
Martyrs at Amonihah
Called "Zion's Poetess", many of her poems were put to song and included in church hymns. She was a founding member of the first relief society, and was single-handedly responsible for re-establishing the Relief Society once the saints were established in Utah. Wife to both Joseph Smith and later Brigham Young.
Eliza R Snow
The only recorded female judge in Israel - This "Mother of Israel" foretold that the glory would be taken from the captain of the hosts of Israel and given to a woman.
Deborah & Jael
Grandmother to Timothy, praised by Paul as a woman of "unfeigned faith" which she passed on to Timothy's mother Eunice
Lois
After suffering abuse at the hand of this Nephite dissenter, his maidservant came to the camp of Captain Moroni and revealed their military plans, allowing him to stop the rebellion in time.
Maidservant of Morianton
Called "indomitable", this gutsy second wife to Brigham Young (after the death of his first wife) endured mobs ransacking her home, extreme sickness, starvation, and many other hardships while her husband was in hiding - all while carrying a newborn.
Once revived Brigham Young after he became unresponsive with scarlet fever - She described in her journal using what we now know as CPR according to revelation - a century before it was developed.
Mary Ann Young