Southern Manx
Manx Gaelic
Gaelg
Native to	Isle of Man
Ethnicity	Manx
Extinct	1974 after the death of Ned Maddrell before subsequent revival.
Language family	Indo-European Celtic Insular Celtic Goidelic Manx Southern Manx
Early forms	Primitive Irish Old Irish Middle Irish Manx
Official status
Official language in	Isle of Man
Language codes
ISO 639-3	–

Southern Manx was a dialect of the Manx language.^[1] It was used by speakers from the sheading of Rushen. It is possible that written Manx represents a 'midlands' dialect of Douglas and surrounding areas. In Southern Manx, older á and in some cases ó became [æː]. In Northern Manx the same happened, but á sometimes remained [aː] as well.

In Northern Manx, older (e)a before nn in the same syllable is diphthongised, while in Southern Manx it is lengthened but remains a monophthong. For example, kione (lit. 'head', cf. Irish: ceann) is [kʲaun] in the north but [kʲoːn] in the south.^[2]