Leti language (Cameroon)
{{Short description|Bantu language of Cameroon}}
{{Distinguish|Leti language|Eton language}}
{{Infobox language
|name=Leti
|nativename=
|states=Cameroon
|ethnicity=Mengisa
|speakers="small population"
|speakers2=ritual L2 use
|date=2014
|ref=e18
|familycolor=Niger-Congo
|fam2=Atlantic–Congo languages
|fam3=Benue–Congo languages
|fam4=Southern Bantoid languages
|fam5=Bantu
|fam6=Mbam
|fam7=Sanaga
|fam8=Tuki?
|lc1=leo|ld1=Leti
|lc2=mct|ld2=Mengisa (duplicate code)
|glotto=leti1245
|glottorefname=Leti (Cameroon)
|guthrie=A.63 (Mengisa)
}}
Leti, or Mangisa, is a Bantu language of Cameroon, spoken by the Mengisa people. Most Mengisa have switched to the Eton language, though a number of them continue to use Leti as a secret ritual language. A smaller number speak Leti as their mother tongue.
Leti is quite close to Tuki and may be a dialect.Hammarström (2015) Ethnologue 16/17/18th editions: a comprehensive review: online appendices It is also closely related to Eton.
Mengisa is spoken in the northern part of Sa'a commune (in Lekié department, Central Region).{{cite book|editor-last=Binam Bikoi|editor-first=Charles|date=2012|title=Atlas linguistique du Cameroun (ALCAM)|trans-title=Linguistic Atlas of Cameroon|volume=1: Inventaire des langues|language=fr|location=Yaoundé|publisher=CERDOTOLA|series=Atlas linguistique de l'Afrique centrale (ALAC)|isbn=9789956796069}}