- Language: Swati
- Alternate names: Isiswazi, Phuthi, Siswati, Swazi, Tekela, Tekeza
- Language code: ssw
- Language family: Niger-Congo, Volta-Congo, Benue-Congo, Bantoid, Southern Bantoid, Bantu, East Bantu, Southern Bantu-Makua, Nguni-Tsonga, Nguni (S.40), Southern Ndebele-Lowland
- Number of speakers: 2000000
- Script: Latin script.
The Swazi language is spoken in Eswatini and South Africa by the Swazi people. The language is taught in Eswatini and some South African schools in Mpumalanga, particularly former KaNgwane areas. Swazi is an official language of Eswatini, and is also one of the eleven official languages of South Africa.