Tadeusz Sendzimir, Polish-American engineer (d. 1989)
Tadeusz Sendzimir (originally Sędzimir; July 15, 1894 in Lwów – September 1, 1989 in Jupiter, Florida) of Ostoja coat of arms was a Polish engineer and inventor of international renown with 120 patents in mining and metallurgy, 73 of which were awarded to him in the United States.His name has been given to revolutionary methods of processing steel and metals used in every industrialized nation of the world. Sendzimir was a holder of the Polish Golden Cross of Merit (from 1938), the Bessemer Gold Medal (from 1965) and the Brinell Gold Medal from the Royal Swedish Academy of Sciences in Stockholm (from 1974). On the 100th anniversary of the Statue of Liberty he was one of those prominent immigrants honored for their contributions to America.

In 1990 Poland's large steel plant in Kraków (formerly the Lenin Steelworks) was renamed to Tadeusz Sendzimir Steelworks. The AIST Tadeusz Sendzimir Memorial Medal was established in the same year.