The flag for Oman, which may show as the letters OM on some platforms.
The Flag: Oman emoji is a flag sequence combining ? Regional Indicator Symbol Letter O and ? Regional Indicator Symbol Letter M. These display as a single emoji on supported platforms.
Flag: Oman was added to Emoji 1.0 in 2015.
U+1F1F4
U+1F1F2
?? Regional indicator symbol letter o
?? Regional indicator symbol letter m