On the Atchison, Topeka and the Santa Fe is a 1944 popular song written by Harry Warren (music) and Johnny Mercer (lyrics). The title refers to the Atchison, Topeka and Santa Fe Railway. The song was written for the film The Harvey Girls, released early 1946. Judy Garland sings it in the film. The song won the Oscar for best original song of 1946. Billboard placed the song at number 4 in its list of top hits for 1945.