Ajax is an unincorporated community in Pennington County, in the U.S. state of South Dakota.[1]

The community was named for Ajax, a hero in Greek mythology.[2]

References

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  1. ^ U.S. Geological Survey Geographic Names Information System: Ajax, South Dakota
  2. ^ Chicago and North Western Railway Company (1908). A History of the Origin of the Place Names Connected with the Chicago & North Western and Chicago, St. Paul, Minneapolis & Omaha Railways. p. 35.

43°53′51″N 103°10′55″W / 43.89750°N 103.18194°W / 43.89750; -103.18194