The flag for Slovenia, which may show as the letters SI on some platforms.
The Flag: Slovenia emoji is a flag sequence combining ? Regional Indicator Symbol Letter S and ? Regional Indicator Symbol Letter I. These display as a single emoji on supported platforms.
Flag: Slovenia was added to Emoji 1.0 in 2015.
U+1F1F8
U+1F1EE
?? Regional indicator symbol letter s
?? Regional indicator symbol letter i