M
- Macaca
- originally used by francophone colonialists in Central Africa's Belgian Congo to refer to the native population; use has expanded to other groups, including North Africans and Indians.
- Mack, Mick, Mickey, Mickey Finn
- a. (Britain, Commonwealth and US) an Irish person or a person of Irish descent. Mick is considered more offensive in the UK and US. From the prefix "Mc"/"Mac" meaning "son of" that is commonly found in Irish surnames. b. (Australia) a Roman Catholic .
- Malaun
- (Bangladesh) A derogatory term used to refer to the Hindus. It is considered an ethnic slur.
- Mallu
- used to call a person of Kerala (Indian) origin or the one who speaks Malayalam.
- Mock / moch
- (US) a Jew
- Monday
- (US) A black person. Popularized by Russell Peters stand up at Def Jam.
- Moulie / Moulignon
- Offensive word for a black person, used by Italians in US. It is a corruption of melanzane, the Italian word for eggplant.
- Munt / Munter
- (among whites in South Africa, Zimbabwe, and Zambia) a black person. Derives from muntu, the singular Bantu word for "person" In the UK, the word means "ugly person", especially "ugly woman".
- Mustalainen (sing.)/Mustalaiset (pl.)
- derived from the Finnish word for "Black", it is a word for the Finnish Kale – a group of the Romani people that lives primarily in Finland and Sweden. It is nowadays sometimes considered an offensive term, and in common and official context romani is considered more appropriate (see ).
- Muzzie / Mussie
- (Europe and US) A highly offensive slang term for a Muslim.
- Mzungu
- (Malawi and Eastern Zambia) "White person", not necessarily offensive.
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