| Mahajani | Data.Text.ICU.Char |
| MahjongTiles | Data.Text.ICU.Char |
| Makasar | Data.Text.ICU.Char |
| Malayalam | Data.Text.ICU.Char |
| Mandaic | Data.Text.ICU.Char |
| MandatoryBreak | Data.Text.ICU.Char |
| Manichaean | Data.Text.ICU.Char |
| ManichaeanAleph | Data.Text.ICU.Char |
| ManichaeanAyin | Data.Text.ICU.Char |
| ManichaeanBeth | Data.Text.ICU.Char |
| ManichaeanDaleth | Data.Text.ICU.Char |
| ManichaeanDhamedh | Data.Text.ICU.Char |
| ManichaeanFive | Data.Text.ICU.Char |
| ManichaeanGimel | Data.Text.ICU.Char |
| ManichaeanHeth | Data.Text.ICU.Char |
| ManichaeanHundred | Data.Text.ICU.Char |
| ManichaeanKaph | Data.Text.ICU.Char |
| ManichaeanLamedh | Data.Text.ICU.Char |
| ManichaeanMem | Data.Text.ICU.Char |
| ManichaeanNun | Data.Text.ICU.Char |
| ManichaeanOne | Data.Text.ICU.Char |
| ManichaeanPe | Data.Text.ICU.Char |
| ManichaeanQoph | Data.Text.ICU.Char |
| ManichaeanResh | Data.Text.ICU.Char |
| ManichaeanSadhe | Data.Text.ICU.Char |
| ManichaeanSamekh | Data.Text.ICU.Char |
| ManichaeanTaw | Data.Text.ICU.Char |
| ManichaeanTen | Data.Text.ICU.Char |
| ManichaeanTeth | Data.Text.ICU.Char |
| ManichaeanThamedh | Data.Text.ICU.Char |
| ManichaeanTwenty | Data.Text.ICU.Char |
| ManichaeanWaw | Data.Text.ICU.Char |
| ManichaeanYodh | Data.Text.ICU.Char |
| ManichaeanZayin | Data.Text.ICU.Char |
| Marchen | Data.Text.ICU.Char |
| MasaramGondi | Data.Text.ICU.Char |
| Match | Data.Text.ICU |
| MatchOption | Data.Text.ICU.Regex, Data.Text.ICU |
| Math | Data.Text.ICU.Char |
| MathematicalAlphanumericSymbols | Data.Text.ICU.Char |
| MathematicalOperators | Data.Text.ICU.Char |
| MathSymbol | Data.Text.ICU.Char |
| MayanNumerals | Data.Text.ICU.Char |
| MCollator | Data.Text.ICU.Collate |
| Medefaidrin | Data.Text.ICU.Char |
| Medial | Data.Text.ICU.Char |
| MediumFormatStyle | Data.Text.ICU.DateFormatter, Data.Text.ICU |
| Meem | Data.Text.ICU.Char |
| MeeteiMayek | Data.Text.ICU.Char |
| MeeteiMayekExtensions | Data.Text.ICU.Char |
| MendeKikakui | Data.Text.ICU.Char |
| MeroiticCursive | Data.Text.ICU.Char |
| MeroiticHieroglyphs | Data.Text.ICU.Char |
| Miao | Data.Text.ICU.Char |
| Millisecond | Data.Text.ICU.Calendar, Data.Text.ICU |
| millisecond | Data.Text.ICU.Calendar |
| MillisecondsInDay | Data.Text.ICU.Calendar, Data.Text.ICU |
| millisecondsInDay | Data.Text.ICU.Calendar |
| Mim | Data.Text.ICU.Char |
| MinimallyRestrictive | Data.Text.ICU.Spoof, Data.Text.ICU |
| Minute | Data.Text.ICU.Calendar, Data.Text.ICU |
| minute | Data.Text.ICU.Calendar |
| mirror | Data.Text.ICU.Char |
| MiscellaneousMathematicalSymbolsA | Data.Text.ICU.Char |
| MiscellaneousMathematicalSymbolsB | Data.Text.ICU.Char |
| MiscellaneousSymbols | Data.Text.ICU.Char |
| MiscellaneousSymbolsAndArrows | Data.Text.ICU.Char |
| MiscellaneousSymbolsAndPictographs | Data.Text.ICU.Char |
| MiscellaneousTechnical | Data.Text.ICU.Char |
| MixedNumbers | Data.Text.ICU.Spoof, Data.Text.ICU |
| MixedScriptConfusable | Data.Text.ICU.Spoof, Data.Text.ICU |
| mkCharsetDetector | Data.Text.ICU.CharsetDetection |
| ModeratelyRestrictive | Data.Text.ICU.Spoof, Data.Text.ICU |
| Modi | Data.Text.ICU.Char |
| ModifierLetter | Data.Text.ICU.Char |
| ModifierSymbol | Data.Text.ICU.Char |
| ModifierToneLetters | Data.Text.ICU.Char |
| Mongolian | Data.Text.ICU.Char |
| MongolianSupplement | Data.Text.ICU.Char |
| Month | Data.Text.ICU.Calendar, Data.Text.ICU |
| month | Data.Text.ICU.Calendar |
| Months | Data.Text.ICU.DateFormatter, Data.Text.ICU |
| Mro | Data.Text.ICU.Char |
| MSpoof | Data.Text.ICU.Spoof |
| Multani | Data.Text.ICU.Char |
| Multiline | Data.Text.ICU.Regex, Data.Text.ICU |
| MusicalSymbols | Data.Text.ICU.Char |
| Myanmar | Data.Text.ICU.Char |
| MyanmarExtendedA | Data.Text.ICU.Char |
| MyanmarExtendedB | Data.Text.ICU.Char |