Leonora Stirling Holsapple Armstrong (June 23, 1895 – October 17, 1980) was the first person of the Baháʼí faith to live in Brazil. She went as a Baháʼí pioneer to Brazil in 1921 when she was 25 years old. Later, in recognition of her efforts and services for the Baháʼí Faith in Brazil and across Latin America she was named the 'Spiritual Mother of the Baháʼís of South America'.