Nikolay Stepanovich Leontiev, Count of Abai, (Russian: ??????´? ?????´????? ????????; 26 October 1862 – 1910) was a Russian military officer and adviser, geographer and traveler, explorer of Africa, writer, first Count of the Ethiopian Empire, and veteran of the First Italo-Ethiopian War, the Boxer Rebellion, and the Russo-Japanese War.