Mageirocophobia - Fear of cooking.

Megalophobia - Fear of large things.

Melanophobia - Fear of the color black.

Mottephobia - Fear of moths (This is a specific phobia that only retains to moths and not other flying insects).

Macrophobia- Fear of long waits.

Maieusiophobia- Fear of childbirth.

Malaxophobia- Fear of love play. (Sarmassophobia)

Maniaphobia- Fear of insanity.

Mastigophobia- Fear of punishment.

Mechanophobia- Fear of machines.

Medomalacuphobia- Fear of losing an erection.

Medorthophobia- Fear of an erect penis.

Melissophobia- Fear of bees.

Melophobia- Fear or hatred of music.

Meningitophobia- Fear of brain disease.

Menophobia- Fear of menstruation.

Merinthophobia- Fear of being bound or tied up.

Metallophobia- Fear of metal.

Metathesiophobia- Fear of changes.

Meteorophobia- Fear of meteors.

Methyphobia- Fear of alcohol.

Metrophobia- Fear or hatred of poetry.

Microbiophobia- Fear of microbes. (Bacillophobia)

Microphobia- Fear of small things.

Misophobia or Mysophobia- Fear of being contaminated with dirt or germs.

Mnemophobia- Fear of memories.

Molysmophobia or Molysomophobia- Fear of dirt or contamination.

Monophobia- Fear of solitude or being alone.

Monopathophobia- Fear of definite disease.

Motorphobia- Fear of automobiles.

Musophobia or Muriphobia- Fear of mice.

Mycophobia- Fear or aversion to mushrooms.

Mycrophobia- Fear of small things.

Myctophobia- Fear of darkness.

Myrmecophobia- Fear of ants.

Mythophobia- Fear of myths or stories or false statements.

Myxophobia- Fear of slime. (Blennophobia