Tat’yana Avenirovna Proskuriakova (Russian: Татья́на Авени́ровна Проскуряко́ва) (January 23 [O.S. January 10] 1909 – August 30, 1985) was a Russian-American Mayanist scholar and archaeologist who contributed significantly to the deciphering of Maya hieroglyphs, the writing system of the pre-Columbian Maya civilization of Mesoamerica. Tatyana Proskuriakova moved to the USA with her parents in 1916. In 1924, she accepted American citizenship. She graduated from the College of Architecture in Pennsylvania (1930). In 1936-1937, she took part in two seasons of archaeological expedition to Piedras Negras (Guatemala). In 1939, she made scientific trips to Copan and Chichen Itza. In 1940-1958, she was a staff member of the Carnegie Institute and developed methods of dating ancient Mayan monuments based on the peculiarities of the fine arts style. In 1950-1955, she worked at the excavations of Mayapan. In 1958, Proskouriakoff moved to the Peabody Museum at Harvard University, where she worked until her retirement in 1977. In her final years of life, she suffered from Alzheimer's disease. The most significant scientific contribution of Tatiana Proskouriakoff is considered to be the consistent application of the structural method to Mayan inscriptions of the classical period, as a result of which she proved that historical events were recorded on the monuments. Publications about new method application have been published since 1960. In 1967, she wrote the preface for the English translation of Yuri Knorozov's monograph "Writing of Maya Indians". However, she did not try to voice Maya texts, although she recognized the method of deciphering the written language.