None or no one
In the German language, Keiner is a pronoun meaning 'none' or 'no one.' As a surname, it may have originated as a nickname or a variant of other Germanic names, but it is exceptionally rare as a given name in both Germany and the United States.
Less common today
Keiner isn't in the latest US Top 1000. It last peaked at #4,870 in 2024.
US births per 5-year period, 1990βpresent (SSA data).