The name Kaiser is a boy's name of German, Bulgarian origin meaning "Emperor". Kaiser is ranked #929 on our popularity charts and is often added to lists like 603 Wonderful Word Names and discussed in our forums with posts like "Picky Parents BNG".
From the experts:
Kaiser, as in roll and Wilhelm, appeared for the first time on the US Top 1000 in 2017. It fits the two-syllable -er ending style that's all the rage, and it lends itself to the short form Kai. But we hope this Germanic version of what is essentially a title rather than a name doesn't keep rising on the charts.