Saigon Sign Language
{{Short description|Sign language used in southern Vietnam}}
{{Infobox language
|name=Ho Chi Minh City Sign
|altname=Saigon Sign
|states=Vietnam
|speakers=45,000
|date=2015
|ref=e25
|speakers_label=Signers
|familycolor = sign language
|fam1=(SE Asian sign area)
|fam2=Deaf-community sign language
|fam3=Vietnamese sign languages
|iso3=hos
|glotto=hoch1237
|glottorefname=Ho Chi Minh City Sign Language
}}
Ho Chi Minh City Sign Language (HCMCSL), also known as Sai Gon Sign Language, is the language of many deaf communities in the south of Vietnam. Research on this sign language started when James Woodward came to Ha Noi in 1997 to do research about sign languages in Vietnam.
{{cite book | last=Woodward | first=James | last2=Thi Hoa | first2=Nguyen | last3=Dinh Mong Giang | first3=Nguyen | last4=Thi Thu Huong | first4=Le | last5=Ngoc Tu | first5=Luu | last6=Thu Van | first6=Ho | title=Sign Languages of the World | chapter=Ho Chi Minh City Sign Language | publisher=De Gruyter | date=25 September 2015 | doi=10.1515/9781614518174-021|editor-last1=Jepsen|editor-first1=Julie Bakken|editor-last2=Clerck|editor-first2=Goedele De|editor-last3=Lutalo-Kiingi|editor-first3=Sam|editor-last4=McGregor|editor-first4=William B.|editor4-link=William B. McGregor|isbn=9781614518174|language=en}} It is about 50% cognate with the other sign languages of Vietnam, and its vocabulary has been extensively influenced by the French Sign Language once taught in Vietnamese schools for the deaf.