This is the flag of the Republic of Malta. The flag is white on the left and red on the right. There is a red and silver George Cross in the upper left corner, awarded by King George VI of England in 1942. It generally means Malta, Maltese or within the territory of Malta, and its capital is Valletta.
🇲🇹 is the Emoji of a country/region‘s flag, and its meaning is flag: Malta. The Emoji 🇲🇹 is composed of two regional indicator letters, namely 🇲 and 🇹. The country/region's 2-letter code for Malta is MT, so the letters corresponding to the two region indicator letters are M and T. 🇲🇹 is displayed as a whole flag on most platforms and as a two-letter symbol on a few platforms.