| Qahveh Khaneh Sign Language | |
| States: | Iran |
| Region: | Tehran |
| Speakers: | (moribund) |
| Familycolor: | Sign |
| Family: | deaf-community sign language |
| Iso3: | none |
| Glotto: | qahv1234 |
| Glottorefname: | Qahvehkhaneh Sign Language |
Qahveh Khaneh Sign Language, literally Coffee House Sign Language, is a deaf sign language of a few elderly members of the deaf community in Tehran. It has been in use since 1900 or earlier. It is unknown if it is related to Iranian Sign Language; it is possible that it descends from an ancestral form of Iranian Sign Language, dating to before that language was standardized.[1]