| Name (1,590) | Creators | Event Dates | Events | Resources |
|---|---|---|---|---|
| Mass in C Major, Mariazeller | Joseph Haydn | 1996 | 1 | |
| Mass in C Major, Op. 86 | Ludwig van Beethoven | 1906 - 2019 | 8 | |
| Mass in C-Minor, K. 427a | Wolfgang Amadeus Mozart | 1987 - 2019 | 15 | |
| Mass in d - Beethoven | 1960 | 1 | ||
| Mass in D Minor | Joseph Haydn | 1992 - 2004 | 4 | |
| Mass in E Flat - Alfred Hill | 1970 | 1 | ||
| Mass in E-Flat | Leoš Janáček | 1993 - 2025 | 2 | |
| Mass in E-Flat Major, Op. 155 | Josef Rheinberger | 1902 | 2 | |
| Mass in E-Minor | Anton Bruckner | 1972 - 2001 | 2 | |
| Mass in G | 1993 | 1 | ||
| Mass in G Minor, BWV 235 | Johann Sebastian Bach | 2000 | 1 | |
| Mass in G-Minor | Vaughan Williams | 1976 - 2001 | 4 | |
| Mass in Time of War | Joseph Haydn | 1970 - 1985 | 3 | |
| Mass K. 139 | Wolfgang Amadeus Mozart | 1991 | 1 | |
| Mass Movement | Robin Fox, Stephanie Lake | 2025 | 1 | |
| Mass No. 2 in G-Major | Franz Schubert | 1987 - 1988 | 2 | |
| Mass, Op. 12, FWV 61, No. 5, "Panis Angelicus" | César Franck | 1947 | 1 | |
| The Massacre at Paris | Christopher Marlowe | 1972 | 1 | |
| The Master and Margarita | Mikhail Bulgakov | 1993 - 2020 | 8 | |
| The Master Builder | Henrik Ibsen | 1911 - 2020 | 15 | |
| Master Class | Terrence McNally | 1997 - 2024 | 14 | |
| Master Class | David Pownall | 1984 - 1985 | 2 | |
| Master Dudley | Philip Johnson | |||
| The Master of Angerstroom | 1914 | 1 | ||
| Master of Arts | William Douglas Home | 1951 | 1 | |
| Master of the Revels | Ray Lawler | 2009 - 2012 | 2 | |
| The Master of Two Servants | George Mully | 1974 | 1 | |
| Master Peter's Puppet Show | Manuel de Falla | 1966 | 1 | |
| The Master's Rival; or, A Day at Boulogne | Richard Brinsley Peake | 1834 | 1 | |
| Masterclass | Charlie Garber, Gareth Davies | 2012 | 1 | |
| Masterpieces | Sarah Daniels | 1991 | 1 | |
| The Mastersingers of Nuremberg, WWV 96 | Richard Wagner | 1953 - 2017 | 18 | |
| The Mastersingers of Nuremberg, WWV, 96, Act III, Prelude | Richard Wagner | 1903 - 2018 | 9 | |
| Mata Hari | Jim Daly | 1984 | 1 | |
| Mata Hari the Magnificent Spy | Ken Lord | 1971 | 1 | |
| Mata Hari, The Flame of Istanbul | A Vincent Jones | 1963 | 1 | |
| The Matchgirls | Bill Owen, Tony Russell | 1966 - 1981 | 2 | |
| The Matchmaker | Thornton Wilder | 1957 - 2022 | 28 | |
| Mate | David Lander | 2007 | 1 | |
| Mater Ora Filium | Arnold Bax | 1992 | 1 | |
| Mates | Peter Kenna | 1975 - 2004 | 13 | 3 |
| Mates | Frank Brown, Louis Esson | 1923 | 1 | 1 |
| Mates of the Mulga | Tod Stewart | 1932 | 1 | |
| Mathematical Models of the Sublime | Grace Walpole, Helen Walpole | 2010 | 1 | |
| The Mathematics of Longing | Suzie Miller, The Uncertainty Principle | 2018 | 1 | |
| Mathinna | David Page, Stephen Page | 2007 - 2010 | 16 | |
| Mathinna in the Red Dress | Don Kay | 2007 | 1 | |
| Mathis der Mater - Symphony | Paul Hindemith | 1973 - 1985 | 2 | |
| Matho | Gerard Brophy | 1993 | 1 | |
| Matilda | Roald Dahl | 2015 - 2017 | 6 | |
| Matilda | Barry Conyngham | 1988 | 1 | |
| Matilda of Hungary | Alfred Bunn, William Vincent Wallace | 1850 | 1 | |
| Matilda the Musical | Dennis Kelly, Tim Minchin | 2016 | 1 | |
| The Matilda Women | Sue Rider | 1988 - 1993 | 2 | |
| Matilda's Mistake | Thorburn Suttie | 1932 | 1 | 2 |
| Matilda's Waltz | Bryan Davidson Blue | 2009 | 1 | |
| Matin Provencal | Joseph Bonnet | 1946 - 1949 | 2 | |
| Matinata | Francesco Paolo Tosti | 1913 | 1 | |
| The Mating Game | Robin Hawdon | 1977 | 2 | |
| The Mating Season | Sam Cree | 1972 | 1 | |
| Matra Pictures | Zoltan Kodaly | 1949 | 1 | |
| Matricide - The Musical | Chamber Made Opera | 1998 | 1 | |
| Matrimonial Manoeuvres | George Darrell | 1872 | 1 | |
| Matrimony! | 1868 - 1870 | 3 | ||
| Matsa; Queen of Fire | Bert Royle, James Cassius Williamson | 1896 - 1897 | 2 | 1 |
| Matt | Emily Steel | 2020 | 1 | |
| Matteo Falcone | 1847 | 2 | ||
| A Matter of Chance | 1990 | 1 | ||
| A Matter of Husbands | Ferenc Molnar | 2024 | 1 | |
| Maud Muller | John Whittier | 1900 | 1 | |
| Maud, "A Voice by the Cedar Tree" | Arthur Somervell | 1951 | 1 | |
| Maud, "Birds in the High Hall Garden" | Arthur Somervell | 1913 - 1944 | 3 | |
| Maud, "Come into the Garden, Maud" | Arthur Somervell | 1913 - 1944 | 2 | |
| Maud, "Go Not, Happy Day" | Arthur Somervell | 1944 - 1951 | 2 | |
| Maud, "My Life has Crept So Long" | Arthur Somervell | 1917 | 1 | |
| Maud, "She Came to the Village Church" | Arthur Somervell | 1913 - 1951 | 2 | |
| Maud. Long After | Alfred Tennyson, George Marshall-Hall | 1901 - 1905 | 2 | |
| Maureen: Harbinger of Death | Jonny Hawkins, Nell Ranney | 2021 - 2023 | 4 | |
| Maurice the Woodcutter; or, The Prince and the Peasant | Charles A Somerset | 1838 | 1 | |
| Mausfallensprüchlein | Eduard Mörike, Hugo Wolf | 1950 | 2 | |
| The Mauve Sheep | Stephen Thomas | 1996 | 1 | |
| Mavis Goes to Timor | Angela Chaplin, Katherine Thomson, Kavisha Mazzella | 2002 - 2003 | 18 | |
| Mavourneen | Louis N Parker | 1916 | 1 | |
| Max | Patricia Cornelius | 1990 | 1 | |
| Max | Kiara Milera | 2020 | 1 | |
| Max and Moritz | Megan Cameron | 2015 | 1 | |
| Max Black | Heinner Goebbels | 2007 | 1 | |
| Maximilian or, The Empress and the Traitor | Robert Percy Whitworth | 1867 | 1 | |
| Maximillian Robespierre | Henry Charles Litolff | 1910 | 1 | |
| Maximum | Natalie Abbott | 2015 | 1 | |
| Maxine Mellor's Mystery Project | Maxine Mellor | 2009 | 1 | |
| May Dew | William Sterndale-Bennett | 1900 - 1901 | 2 | |
| The May Queen | John Baldwin Buckstone | 1836 | 1 | |
| Maybe Forever | Meg Stuart, Philipp Gehmacher | 2010 | 1 | |
| The Mayne Inheritance | Errol O'Neill | 2004 - 2016 | 2 |