Sir Littleton Ernest Groom KCMG KC was an Australian politician. He held ministerial office under four prime ministers between 1905 and 1925, and subsequently served as Speaker of the House of Representatives from 1926 to 1929.

The speaker of the House of Representatives is the presiding officer of the Australian House of Representatives, the lower chamber within the Parliament of Australia. The counterpart in the upper house is the president of the Senate. The office of the speakership was established in 1901 by section 35 of the Constitution of Australia. The primary responsibilities of the office is to oversee house debates, determine which members may speak, maintain order and the parliamentary and ministerial codes of conduct during sessions and uphold all rules and standing orders. The current speaker of the House of Representatives is Milton Dick, who was elected on 26 July 2022.