What does Isais mean?
Isais has 1 more related form via Isaiah: Isia.
Isais is an uncommon given name for males but a very popular surname for both adults and children (#37756 out of 88799, Top 43%). (2000 U.S. Census)
Displayed below is an analysis of the usage of Isais and corresponding names. Prominent alternative forms of Isais (#unlisted) are Isaiah (#48 the previous year), Isiah and Izaiah (#459). This boy name was at the top of its popularity in the year 2005 and is now much less widespread, with the form Isiah becoming less in vogue. Isaiah (#48) and Izaiah (#459) are two of the more chic names for newborns among these, with Isaiah going through a rekindling in usage. (Top 1000 Baby Names Statistics, 2014)