Sis may refer to: Sister Kozan, Adana, a city in Turkey Sis, Armenia, a town in Armenia Sis, Azerbaijan, a village in Azerbaijan An alternative for Sissy Silicon Integrated Systems (SiS), a semiconductor design and manufacturing company based in Taiwan Sis, a GMA Network show in the Philippines School of International Service, American University's School of International Service, located in Washington D.C. Schengen Information System, used by European police forces… (More on Sis)