Avichai Rontzki (), born October 10, 1951, is the former Chief Military Rabbi of the Israel Defence Forces. He served in the position from 2006 to 2010, with a rank of Brigadier General. His predecessor in that position was Rabbi Israel Weiss. Rontzki is also the rosh yeshiva of the Hesder Yeshiva in the West Bank settlement Itamar. His four years in office have led to several controversies.