Name
- Mitchell, M L, Miss of the Women's International League1
- Mock?, Louise, friend of C F Shaw1
- Montagu, Ivor Goldsmid Samuel, son of Louis 2nd Baron Swaythling1
- Mulgan, Alan E, author1
- Muller, Frederick, publisher1
- Murray, George Gilbert Aimé, OM, classical scholar, 1866-19571
- Mušek, Alice, wife of Karel Mušek Czech translator1
- National Provincial Bank Limited1
- O'Faolain, Sean, Irish writer1
- O'Neil, Henry, guild socialist of Dublin1
- Ogden, Charles Kay, originator of Basic English1
- Patch, Blanche, secretary to G B Shaw, 1879-19661
- Paul Elek, publishers1
- Pearson, Edward Hesketh Gibbons, actor and biographer, 1887-19641
- Pease, Edward Reynolds, secretary of the Fabian Society, 1857-19551
- Plunkett, Horace Curzon, KCVO1
- Poel, William, theatre producer1
- Polish Theatre, Warsaw1
- Pownall, J G, of the Charity Commission1
- Pozmantier, Frank, author1