Quezon City Official languages Filipino ( Tagalog ) , English Recognised regional languages Bikol , Cebuano , Hiligaynon , Ilokano , Kapampangan , Kinaray-a , Maguindanao , Maranao , Pangasinan , Tausug , Waray-Waray [ 2 ] Voluntary and optional languages Spanish and Arabic National language Filipino Demonym Filipino or Pinoy