Sysop

Sysops, also written as SysOps; a shortened portmanteau of 'system operators' – of a wiki, are also known as administrators. Sysops can perform administrative functions that regular accounts holders cannot. Sysops can block difficult peoples or unblock them, and can delete spam or vandalism. Sysops can also protect pages, unprotect them and edit protected pages.

Most wiki on the internet post a full list of current Sysops of that wiki somewhere.