Betty Mahmoody (born June 9, 1945) is an American author and public speaker best known for her book, Not Without My Daughter, which was subsequently made into a film of the same name. She is the President and co-founder of One World: For Children, an organization that promotes understanding between cultures and strives to offer security and protection to children of bi-cultural marriages.

Her book, Not Without My Daughter, is an account of her experiences in 1984–86, when she left Alpena, Michigan to go to Iran with her husband and daughter for what she was promised would be a short visit. Once there, she and her daughter were held against their wills. According to the book, she and her husband, Sayed Bozorg Mahmoody, and daughter, Mahtob, were involved in a desperate and daring escape.