Kieschnick is a surname. Kieschnick is Sorbian (or Wendish) for "cottager." Notable people with this name include:
Brooks Kieschnick (born 1972), American retired baseball player Gerald B. Kieschnick (born 1943), the 12th president of the Lutheran Church–Missouri Synod (LCMS) Roger Kieschnick (born 1987), American baseball outfielder