Yasuo Ikenaka (?? ??, Ikenaka Yasuo, March 1914 - March 14, 1992) was a Japanese long-distance runner who is credited by the International Association of Athletics Federations for setting a world's best in the marathon on April 3, 1935.
According to the IAAF, Ikenaka's time of 2:26:44 was over a minute faster than the previous record set by Fusashige Suzuki three days earlier.