Krisztián Sárneczky (born 6 November 1974 in Budapest) is a Hungarian teacher of geography and prolific discoverer of minor planets and supernovae, researching at Konkoly Observatory in Budapest, Hungary.
He is a board member of the Hungarian Astronomical Association (HAA) and member of the American Association of Variable Star Observers, leader of the Comet Section of the HAA, and is a contributor in the editorial work of Hungarian Astronomical Almanach.