Sienko or Sieńko is a Ukrainian or Polish surname (respectively), derived as a diminutive of the given name Simon (Semen in Ukrainian and Siemion in Polish). Notable people with the surname include:
Kathleen Sienko, American biomechanical engineer and professor
This page lists people with the surnameSienko. If an internal link intending to refer to a specific person led you to this page, you may wish to change that link by adding the person's given name(s) to the link.