| Name | Book/story/stage title | Notes
|
| Mabel | The Inimitable Jeeves | Waitress at tea-and-bun shop
|
| Mabel | The Girl in Blue | Secretary to Willoughby Scrope
|
| Mac | | Stage doorkeeper of the Regal Theatre
|
| MacArthur, 'Babe' | | Boy at St. Austin's College
|
| MacArthur, Mrs | The Pothunters | Mother of 'Babe'
|
| Mace | Harrison's Slight Error | Boy at St. Austin's College
|
| Mace, Lady Vera | Big Money | Sister of Lord Hoddesdon
|
| Maclaine | Mike at Wrykyn | Plays for the Ripton cricket team
|
| Mackintosh, George | The Salvation of George Mackintosh | A diffident golfer who starts talking
|
| MacPherson | The Head of Kay's | Boy at Eckleton College
|
| Mae | Back to the Garage | Chorus girl
|
| Mainprice, Tommy | The Fiery Wooing of Mordred | House guest at Smattering Hall
|
| Mainwaring, Peggy | Bertie Changes his Mind | A young schoolgirl, absent without leave
|
| Malim | Not George Washington | A Foreign Office secretary
|
| Mallaby, Clarice | The Knightly Quest of Mervyn | A young woman, fond of strawberries
|
| Malling, Toddy | Big Money | Escorted Ann Moon to the Bassingers' Ball
|
| Maloney, Pugsy | | Office boy of Cosy / Peaceful Moments
|
| Malpus, General | From a Detective's Notebook | A club member
|
| Maltravers, Miss Yvonne | The Code of the Mulliners | An actress, a stout young woman
|
| Malvern, Lady | Jeeves and the Unbidden Guest | A fast writer; Lord Pershore's mother
|
| Mamie | The Coming of Bill | Bill Bannister's nurse
|
| Mannering, Egremont | Laughing Gas | A drinker
|
| Mannering-Phipps, Augustus | Extricating Young Gussie | Looking for money but goes on the stage
|
| Mannering-Phipps, Julia | Extricating Young Gussie | Gussie's mother, ex-actress
|
| Mannister, General | The Indiscretions of Archie | Uncle of Lord Seacliff
|
| Mansfield | Shields' and the Cricket Cup | Boy at Wrykyn College
|
| Mansky | The Play's the Thing | A dramatist
|
| Mant, Col. Horace | Something Fresh | Husband of Lady Mildred
|
| Maple | Joy in the Morning | Butler to Lord Worplesdon at Bumpleigh Hall
|
| Maplebury, Lora Smythe | Keeping in with Vosper | Mother of Evangeline Fisher
|
| Mapledurham, Lester | Strychnine in the Soup | Explorer and big-game hunter
|
| Mapleton, Miss | Jeeves and the Kid Clementina | Head of St. Monica's, Bingley-on-Sea
|
| Maraquita | A Man of Means | A Paranoyan dancer
|
| March, Bessie | A Man of Means | An editor
|
| Margerison | Came the Dawn | Hall porter at the Junior Lipstick
|
| Marie | | Lottie's maid
|
| Mariner, Elmer | Jill the Reckless | Uncle of Jill Mariner; Brookport, Long Island
|
| Mariner, Jill | Jill the Reckless | A girl, not that reckless
|
| Mariner, Mrs | Jill the Reckless | Elmer's wife
|
| Mariner, 'Tibby' | Jill the Reckless | Elmer's son
|
| Marlene | Cocktail Time | An office worker
|
| Marks, Sid | Misunderstood | Leader of the Frith Street gang
|
| Marlowe, Sir Mallaby | The Girl on the Boat | Solicitor and father of Sam
|
| Marlowe, Peggy | Barmy in Wonderland | A chorus-girl
|
| Marlowe, Sam | The Girl on the Boat | A young man who plays a lot of sport
|
| Marriott | A Prefect's Uncle | Boy at Beckford College
|
| Marsh, Lady Maud | A Damsel in Distress | The distressed damsel; daughter of Lord Marshmorton
|
| Marshall, Major | The Luck Stone | A bad man
|
| Marshall, Mr | Rallying Round Old George | A boat owner
|
| Marshmorton, Lord | A Damsel in Distress | A socialist peer and keen gardener
|
| Marson, Ashe | Something Fresh | A writer of adventure stories
|
| Martyn, Algy | | A young man with big schemes
|
| Martyn, Jane | Company for Henry | Algy's sister
|
| Mary | When Papa Swore in Hindustani | Maid to the Reynolds
|
| Mason | The White Feather | Boy at Wrykyn College
|
| Mason, Dora | Ukridge Sees Her Through | A young businesswoman
|
| Mason, Mortimer | Summer Lightning | Theatrical agent, Mason and Saxby
|
| Mason, Wally | Jill the Reckless | A successful writer of musicals
|
| Maude, John | | A man who discovers his true origin
|
| Maufringneuse et Valerie-Moberanne, Marquis de | French Leave | A penniless French nobleman, 'Old Nick'
|
| Maundrell, Mr | Not George Washington | An actor
|
| Maurice | The Gold Bat | Boy at Wrykyn College
|
| Maxwell, Rutherford | In Alcala | A would-be writer
|
| Maxwell, William John | The Eighteenth Hole | A young golfer
|
| Maynard, Rose | Honeysuckle Cottage | A pretty girl who suffers an accident
|
| McAllister, Angus | | Head gardener at Blandings Castle
|
| McAllister, Dick | Leave it to Jane | A student
|
| McAlpin, Mr | Leave it to Algy | A bookie
|
| McCall, Cora Bates | The Indiscretions of Archie | Lectures on diet advocating nuts etc.
|
| McCall, Lindsay | The Indiscretions of Archie | Cora's husband
|
| McCall, Washington | The Indiscretions of Archie | Washy, Cora's son
|
| McCay | Archibald's Benefit | Secretary, Cape Pleasant Golf Club
|
| McClure, Jack | Barmy in Wonderland | Partner in Lehmac Productions with Joe Lehman
|
| McCorkadale, Mrs | Much Obliged, Jeeves | A barrister, standing for Parliament
|
| McEachern, John | A Gentleman of Leisure | A corrupt policeman
|
| McEachern, Molly | | John/Patrick's daughter
|
| McEachern, Patrick | The Gem Collector | A rich American
|
| McFarland, Andy | The Making of Mac's | Mac's son, continuing the business
|
| McFarland, Mr | The Making of Mac's | The founder of Mac's
|
| McGarry | | Barman at the Drones club
|
| McGee, John | Mr McGee's Big Day | A hotel detective
|
| McGee, Mrs | Mr McGee's Big Day | John McGee's wife
|
| McGee, Shorty | Oh, Kay! | A bootlegger
|
| McGinnis, Buck | | Head of a kidnapping gang, after Ogden Ford
|
| McGowan, Matty | Leave it to Jane | A trainer
|
| McHoots, Sandy | | A champion golfer
|
| McIntosh, Mr | Noblesse Oblige | A bookie
|
| McKinnon, Andrew | Honeysuckle Cottage | James Rodman's literary agent
|
| McMurdo, Cyril | Cocktail Time | Policeman in Dovetail Hammer
|
| McMurdo, Sidney | | A strong golfer
|
| McPherson | Mike and Psmith | Boy at Sedleigh College
|
| McTavish, Angus | Farewell to Legs | A serious golfer
|
| McTeague | Summer Lightning | Doorman at Mario's restaurant
|
| McTodd | | Boy at Wrykyn College
|
| McTodd, Cynthia | Leave it to Psmith | Ralston Todd's wife
|
| McTodd, Ralston | Leave it to Psmith | Canadian poet, wrote The Songs of Squalor
|
| Meadowes | | Valet of Archibald Mulliner
|
| Meadowes, Freddie | | A young man who's quarrelled with his girl
|
| Meadows | The Romance of a Bulb-squeezer | J. Horatio Biggs's butler
|
| Mealing, Archibald | Archibald's Benefit | A zig-zag golfer
|
| Medley, Mrs | Love Among the Chickens | Jerry Garnet's landlady
|
| Medway | Hot Water | Mrs Gedge's maid, wooed by Blair Eggleston
|
| Medway, Barbara | The Heart of a Goof | A golfer who tries to boost her boyfriend's confidence
|
| Medwin, Mr and 'Tootles' | Helping Freddie | A kid and his father at Marvis Bay
|
| Meech, George Christopher | If I Were You | A barber, engaged for 8 years
|
| Meecher, Mrs | The Adventures of Sally | Runs a boarding house in Greenwich Village
|
| Meggs, Mr | A Sea of Troubles | A suicidal dyspeptic
|
| Meier of Sarnen | William Tell Told Again | A Swiss
|
| Melhuish | Between the Innings | A cricketer
|
| Mell | The Play's the Thing | A secretary
|
| Mellish, Mr | | Form master at St. Austin's College
|
| Mellon, George | The Spring Suit | A secretary
|
| Melville, Brewster | Reginald's Record Knock | Margaret's brother, a cricket club secretary
|
| Melville, Margaret | Reginald's Record Knock | Engaged to Reginald Humby, a poor cricketer
|
| Melville, Mrs | Reginald's Recodr Knock | Margaret's mother
|
| Mennick, Mr | The Little Nugget | Secretary to Elmer Ford, sent to retrieve Ogden
|
| Menzies, Samuel | | Boy at Wrykyn College
|
| Mercer, Sidney | The Man with Left Two Feet | A bank clerk and dancer
|
| Meredith, Chester | Chester Forgets Himself | A golfer of considerable vocabulary
|
| Merevale, Mr | | House master at St. Austin's College
|
| Meriwether, Cuthbert | Service with a Smile | Alias of Bill Bailey at Blandings Castle
|
| Merolchazzar, King | The Coming of Gowf | The King of Oom
|
| Merrett, Mr | A Division of Spoil | Theodore's father
|
| Merrett, Theodore | | Boy at Wrykyn College
|
| Merridew, Amelia | The Heel of Achilles | Potential fourth wife for Vincent Jopp
|
| Merridew, Miss | The Spring Suit | Works in a clothes store
|
| Messmore, Dwight | Up from the Depths | A Davis Cup tennis player
|
| Michael, Mr | Not George Washington | Musical critic
|
| Mickley, Aubrey | Educating Aubrey | Boy at Wrykyn College, badly spoilt
|
| Mickley, Mrs | Educating Aubrey | Aubrey's mother
|
| Middlewick, Lady Anastasia | Leave it to Psmith (play) | Lord Middlewick's wife
|
| Middlewick, Lord Eustace | Leave it to Psmith (play) | An Earl
|
| Midgeley, J. B. | The Girl on the Boat | Steward on RMS Atlantic
|
| Mifflin, Arthur | | An English actor
|
| Mill | | Boy at Wrykyn College
|
| Millbank, Basil | The Coming of Bill | Liked by women, instinctively disliked by men
|
| Miller, Jeff | Money in the Bank | A barrister and thriller writer
|
| Miller, Johnson | Jill the Reckless | A choreographer
|
| Miller, Sandy | Pearls, Girls and Monty Bodkin | A young American woman
|
| Millicent | Summer Moonshine | A small under-maid at Walsingford Hall
|
| Milliken, Miss | The Girl on the Boat | Sir Mallaby Marlowe's stenographer
|
| Mills, Henry Wallace | The Man with Left Two Feet | A bank clerk with two left feet
|
| Mills, Phyllis | Jeeves in the Offing | Rev. Aubrey Upjohn's daughter
|
| Milsom, Margaret | Archibald's Benefit | Engaged to Archibald Mealing
|
| Milsom, Stuyvesant | Archibald's Benefit | Margaret's brother
|
| Milton | The Gold Bat | Boy at Wrykyn College
|
| Mitchell, Jerry | Piccadilly Jim | An ex-boxer, now a fitness trainer
|
| Mitchell, Ollie | Leave it to Jane | A student
|
| Moffam, Archie | The Indiscretions of Archie | An Englishman in New York
|
| Moffam, Lucille | The Indiscretions of Archie | Archie's wife
|
| Molloy, Dora 'Dolly' | | A pickpocket, married to Soapy
|
| Molloy, 'Soapy' | | A seller of fake oil stock, married to Dolly
|
| Monk, Jack | A Prefect's Uncle | Boy at Beckford College
|
| Montgomery | | Boy at St. Austin's College
|
| Montrose, Maudie | Pigs Have Wings | Ex-barmaid at the Criterion
|
| Montrose, Sid | Reggie and the Greasy Bird | A piano player and greasy bird
|
| Moon, Ann | Big Money | A young woman, daughter of Josephine
|
| Moon, Elmer | The Indiscretions of Archie | A New York crook
|
| Moon, Josephine | Big Money | Mother of Ann
|
| Moon, Sebastian | The Love that Purifies | Boy with curls and an outspoken manner
|
| Moore, Eddie | Three from Dunsterville | A businessman in New York
|
| Moore, Eileen 'Dinty' | Barmy in Wonderland | A secretary
|
| Moore, Jerry | By Advice of Counsel | A wealthy bachelor with unusual friends
|
| Morehead, Daphne | Jeeves and the Feudal Spirit | A successful novelist
|
| Morehouse, Bill | The Old Reliable | A Hollywood police patrolman
|
| Moresby, Joseph | Something Squishy | A magistrate
|
| Moresby, Lucy | Something Squishy | A young woman
|
| Moriarty | The Gold Bat | Boy at Wrykyn College
|
| Morrell | The Head of Kay's | Boy at Eckleton College
|
| Morrison | The Luck Stone | Boy at Marleigh school
|
| Morrison | The Pothunters | A rowdy boy of Ward's House, St. Austin's College
|
| Morrison | The Prize Poem | Sixth form boy at St. Austin's College
|
| Morrison, Della | The Prince and Betty (UK) | Young woman, friend of Betty Silver
|
| Morrison, Richard | The Prince and Betty (UK) | Della's father, recently rich
|
| Morrison, Rupert | The Man Upstairs | A friend of the man upstairs
|
| Morrison, Rupert | Cocktail Time | Landlord of the Beetle and Wedge
|
| Morse, Daisy | Oh, Kay! | A girl
|
| Morse, Mae | Oh, Kay! | A girl
|
| Morse, Molly | Oh, Kay! | A girl
|
| Morse, Peggy | Oh, Kay! | A girl
|
| Mortimer, Bream | The Girl on the Boat | In love with Billie Bennett; a chicken
|
| Mortimer, Legs | Farewell to Legs | A life and soul of the party
|
| Mortlake, Augustus | Do Butlers Burgle Banks? | Trustee of Bond's Bank
|
| Mould, Constable | Money for Nothing | Policeman in Rudge-in-the-Vale
|
| Mountry, Lord Edward | The Little Nugget | A friend of Nesta Ford
|
| M'Todd | | Boy at Wrykyn College
|
| Mulholland, Mr | The Head of Kay's | Music master at Eckleton College
|
| Muller, Captain | Death at the Excelsior | A sea captain
|
| Mullett, Frederick | The Small Bachelor | Reformed burglar and George Finch's valet
|
| Mulligan, Mavis | Pearls, Girls and Monty Bodkin | Ivor Llewellyn's step-daughter
|
| Mulliner, Adrian | | A private detective
|
| Mulliner, Alfred | George and Alfred | A stage conjuror
|
| Mulliner, Angela | A Slice of Life | Wife of Wilfred; née Purdue
|
| Mulliner, Anselm | Anselm gets his Chance | A curate
|
| Mulliner, Archibald | | A chicken imitator
|
| Mulliner, Augustine | | Curate and consumer of Buck-U-Uppo
|
| Mulliner, Augustus | The Right Approach | A young man
|
| Mulliner, Brancepeth | Buried Treasure | An artist
|
| Mulliner, Bulstrode | The Castaways | A Hollywood writer
|
| Mulliner, Charlotte | The Unpleasantness at Bludleigh Court | A poetess
|
| Mulliner, Cedric | The Story of Cedric | A leading snob
|
| Mulliner, Clarence | The Romance of a Bulb-Squeezer | A photographer
|
| Mulliner, Egbert | Best Seller | An assistant editor
|
| Mulliner, Egbert | Another Christmas Carol | A Civil Servant
|
| Mulliner, Eustace | Open House | Our man in Switzerland
|
| Mulliner, Evangeline | Best Seller | Egbert's wife
|
| Mulliner, Frederick | Portrait of a Disciplinarian | Brother of George
|
| Mulliner, George (Dr) | Portrait of a Disciplinarian | Doctor in Bingley-on-Sea
|
| Mulliner, George (Mr) | The Truth About George | A man with a stammer
|
| Mulliner, George (Mr) | George and Alfred | Screenwriter and Alfred's brother
|
| Mulliner, Ignatius | The Man who gave up Smoking | A portrait painter
|
| Mulliner, Lancelot | Came the Dawn | A poet
|
| Mulliner, Lancelot | | A portrait painter
|
| Mulliner, Mervyn | The Knightly Quest of Mervyn | A chump
|
| Mulliner, Mervyn | A Cagey Gorilla | An assistant film director
|
| Mulliner, Montrose | Monkey Business | An assistant film director
|
| Mulliner, Mordred | The Fiery Wooing of Mordred | A poet
|
| Mulliner, Mr | | A story teller at The Angler's Rest
|
| Mulliner, Osbert | The Ordeal of Osbert Mulliner | A wealthy man in love
|
| Mulliner, Reginald | Big Business | A dim bulb
|
| Mulliner, Sacheverall | The Voice from the Past | A timid man
|
| Mulliner, Sir Sholto | The Code of the Mulliners | Archibald's late father
|
| Mulliner, Wilfred | A Slice of Life | Inventor of Mulliner's Magic Marvels
|
| Mulliner, Wilhelmina | The Code of the Mulliners | Archibald's mother
|
| Mulliner, William | The Story of William | Caught in the San Francisco Earthquake
|
| Mulliner, Wilmot | The Nodder | The Nodder, in Hollywood
|
| Mullins, Spike | | A red-haired burglar
|
| Mumford, Reggie | Reggie and the Greasy Bird | A young man short of money
|
| Murdoch, Mr | Crowned Heads | A glazier and draughts player
|
| Murgatrotyd, Ed | The Castaways | A bootlegger
|
| Murgatroyd, E. Jimpson | | A Harley Street doctor; an expert on spots
|
| Murgatroyd, Mabel | | A troublesome young lady
|
| Murgatroyd, Mr | The Nodder | Film director
|
| Muriel | The Reverent Wooing of Archibald | Fun loving friend of Aurelia Cammarleigh
|
| Muriel | Buried Treasure | Daughter of Lord Bromborough
|
| Murphy, PC Claude | Galahad at Blandings | A policeman in Market Blandings
|
| Murphy, Ginger | Reggie and the Greasy Bird | A red-haired egg-thrower
|
| Murphy, 'Silent' | Leave it to Jane | A college footballer
|
| Murphy, 'Spike' | Sam the Sudden | Champion high-kicking office boy
|
| Murphy, Tommy | Laughing Gas | An ex child film star
|
| Myrtle | Uncle Dynamite | Barmaid at the Bull's Head, Ashenden Oakshott
|
