Amatu'l-Bahá Rúhíyyih Khánum, Bahá’í Hand of the Cause of God and wife of Shoghi Effendi (b. 1910)
Rúhíyyih Rabbání (8 August 1910 – 19 January 2000), born as Mary Sutherland Maxwell and best known by the title Amatu'l-Bahá Rúhíyyih Khánum, was the wife of Shoghi Effendi, the Guardian of the Baháʼí Faith, from 1937 to 1957. In 1952, she was elevated to the office of Hand of the Cause of God, for which she attended to issues related to the expansion and protection of the Baháʼí Faith, and served an important role in the transfer of authority from 1957 to 1963.

Rúhíyyih Rabbání was raised in Montreal, Quebec. After two trips to the Baháʼí holy land in Haifa, Israel, she engaged in many youth activities in the Baháʼí community. She married Shoghi Effendi in 1937. After his death, Rúhíyyih Rabbání became for Baháʼís the last remaining link to the family of ʻAbdu'l-Bahá, who headed the Baháʼí Faith from 1892 to 1921 and was the eldest son of the faith's founder, Baháʼu'lláh. In 2004, CBC viewers voted her number 44 on the list of "greatest Canadians" on the television show The Greatest Canadian.Rúhíyyih Khánum was the author of several published books, such as Prescription for Living and The Priceless Pearl.