SAIS, SAIs or Sais may refer to: SAIS Paul H. Nitze School of Advanced International Studies, part of the Johns Hopkins University Sharjah American International School, in Sharjah, United Arab Emirates South African Institute of Stockbrokers Southern Association of Independent Schools, U.S. Stamford American International School, located in Singapore Strange Adventures in Infinite Space, a 2002 computer game SAIs Supreme audit institutions Sais Sais (genus), a genus of butterflies in the family Nymphalidae Sais, Egypt, an ancient civilization on the River Nile Sais, the Welsh language word for an English person sais, misspelling of sai, a type of dagger-like weapon (sai in plural form is simply sai)