Cis or cis- may refer to:
Cisco Systems, Inc. (known as Cisco) is an American multinational technology conglomerate headquartered in San José, California, in the center of Silicon Valley, that develops, manufactures, and sells networking hardware, telecommunications equipment, and other high-technology services and products.
A Cistercian is a member of the Cistercian Order (/sɪˈstɜːrʃən/, abbreviated as OCist or SOCist (Latin: (Sacer) Ordo Cisterciensis), a religious order of monks and nuns.
Emily "Cissy" Houston (née Drinkard; born September 30, 1933) is an American soul and gospel singer. After a successful career singing backup for such artists as Elvis Presley and Aretha Franklin she embarked on a solo career, winning two Grammy Awards for her work.
Cisgender (often abbreviated to simply cis) is a term for people whose gender identity matches the sex that they were assigned at birth.
Cisplatin is a chemotherapy medication used to treat a number of cancers. This includes testicular cancer, ovarian cancer, breast cancer, bladder cancer, head and neck cancer, cervical cancer, lung cancer, mesothelioma, esophageal cancer, brain tumors, and neuroblastoma.
The Cisco Nexus Series switches are modular and fixed port network switches designed for the data center.
Catalyst is the brand for a variety of network switches sold by Cisco Systems. While commonly associated with Ethernet switches, a number of different interfaces have been available throughout the history of the brand.
Cisco PIX (Private Internet eXchange) was a popular IP firewall and network address translation (NAT) appliance.