Ladek C. "Lud" Fiser (October 26, 1908 – August 25, 1990) was an American football and baseball player and coach. He served as the head football coach at Kansas State University in 1945, compiling a record of 1–7. Fiser was also the head baseball coach at Kansas State in 1947 and 1948, tallying a mark of 25–16. Fiser was a native of Mahaska, Kansas, and a 1931 graduate of Kansas State University, where he was a two-year letterman on the football, baseball and track teams.