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What does Si mean?

Si /si/ as a name for boys. Si's name origin is Hebrew, and Si means "to hear, listen; reputation". Si is an alternate spelling of Simon (Hebrew).


Si has 4 alternative forms via Simon: Sim, Simen, Simms and Syms.

Kreatif forms:
(male) Sei, Sin, ..

(female) Se, Sli, ..

How popular is Si?

Si is an uncommon first name for males but a very popular last name for all people (#32743 out of 150436, Top 22%). (2000 U.S. Demographics)


Ranking and usage % can show different trends depending on the distribution of names that year.

Simon (#231 from current records) and Sim are the popular varying forms of Si (not in Top 2000) listed in the Top 2000. Adoption of these forms of Si was at its highest in the 1880s (adoption of 0.1%) and is almost as conventional today (adoption 0.08%, 11.4% less), but with the version Sim becoming somewhat outmoded. Simon is the most fashionable name for newborns in this list. Below is a graphed comparison of the usage of Si and related names. (2014 Birth Statistics)

Top 2000 baby names ranking of Sim, Simon in U.S.

Top 100 baby names ranking of Simon outside U.S.

Similar Names


Si is pronounced similarly to Cy. Other recommended names are Hi and Sid. These names tend to be more commonly used than Si.