Nikolaus m (genitive Nikolaus or Nikolaus')
- St. Nicholas, a figure similar to the Anglo-Saxon Santa Claus, bringing children (small) presents during the night before the 6th of December
- A male given name, cognate to Nicholas.
The saint is usually named with a definite article: der Nikolaus. In this case, the genitive is des Nikolaus without an apostrophe. Otherwise it is (prepositioned) Nikolaus' with apostrophe.
- variants and pet forms: Claus, Klaus, Nick, Niclas, Nico, Nicolas, Niels, Niki, Niklas, Niklaus, Niko, Nils
- feminine forms: Nicole