Nickolaus is a given name and a surname. Notable people with this name include the following:
Given name Nickolaus Hirschl (1906–1991), Austrian wrestler Nickolaus Mowrer, known as Nick Mowrer (born 1988), American sport shooter.
Surname John M. Nickolaus Jr. (1913–1985), American cinematographer
See also
Nicholaus Nicklaus (name) Nickolas Nikolaus (given name)