There are 24 letters in the basic Korean alphabet, but there are 40 letters in total. These last 16 letters include the five double consonants ㄲ, ㄸ, ㅃ, ㅆ, & ㅉ and 11 compound vowels (ㅐ,ㅒ,ㅔ,ㅖ,ㅘ,ㅙ,ㅚ,ㅝ,ㅞ,ㅟ,ㅢ). ALPHABET: ㄱㄴㄷㄹㅁㅂㅅㅇㅈㅊㅋㅌㅍㅎ ㅏㅑㅓㅕㅗㅛㅜㅠㅡㅣ. ALL LETTERS: ㄱㄴㄷㄹㅁㅂㅅㅇㅈㅊㅋㅌㅍㅎㄲㄸㅃㅆㅉ ㅏㅐㅑㅒㅓㅔㅕㅖㅗㅘㅙㅚㅛㅜㅝㅞㅟㅠㅡㅣㅢ