Ilja Prachař ( April 30, 1924, Malenovice – August 10, 2005, Prague ) was a Czech actor and playwright.

He was born in Malenovice near Zlín as the middle of three sons of František Prachar (1899–2001), an official of the district health insurance company in Zlín, and his wife Ludmila (1901–1981). The elder brother Drahomír (1922–2008) later worked in a foreign trade company, the younger Kamil (1931–2020) became a theater actor and worked almost his entire professional career in the theater in Cheb . In Zlín and Malenovice, the parents actively engaged in associational life and performed volunteer theater. His wife Jana (*1937) is a puppeteer, his son David (*1959), grandson Jakub (*1983), granddaughter Mariana (*1994) and great-granddaughter Alžběta Malá (*1997) are acting.