Olis is of Greek origin, derived from the word 'ōlizō', which means 'to swear'. It is often considered a variant spelling of the name Olin, which also has Greek roots. The name Olis is quite rare and unique, yet it possesses a certain charm and sophistication due to its Greek heritage.
The name Olis was quite popular between the years 1919 and 1931, with a total of 35 babies being named Olis during this period. The highest number of births occurred in 1922 with 13 newborns sharing the name.