Ludvík Krejčí (born August 17, 1890) was a prominent four-star general of the Czechoslovak Army, a veteran of the Czechoslovak Legion and the Chief of Staff of the Czechoslovak Army from 1933 to 1938. On September 23, 1938 he was appointed Chief of the Main Headquarters of the Czechoslovak Army, and was responsible for the reorganization and mobilization of the Czechoslovak Army during the Munich Crisis and the subsequent Axis invasion of Czechoslovakia between October 1, 1938 and March 15, 1939.