Naomi is Ruth's mother-in-law in the Hebrew Bible in the Book of Ruth. The etymology of her name is not certain, but it is possible that it means "good, pleasant, lovely, winsome."

Ruth is the person after whom the Book of Ruth is named. She was a Moabite woman who married an Israelite, Mahlon. After the death of all the male members of her family, she stays with her mother-in-law, Naomi, and moves to Judah with her, where Ruth wins the love and protection of a wealthy relative, Boaz, through her kindness. She is the great-grandmother of David.