| Atatláhuca–San Miguel Mixtec | |
| States: | Mexico |
| Region: | Oaxaca, Guerrero |
| Date: | 1995–2010 |
| Ref: | e18 |
| Familycolor: | American |
| Fam1: | Oto-Manguean |
| Fam2: | Mixtecan |
| Fam3: | Mixtec |
| Lc1: | mib |
| Ld1: | Atatláhuca |
| Lc2: | mdv |
| Ld2: | Santa Lucía Monteverde |
| Lc3: | mce |
| Ld3: | Itundujía |
| Lc4: | mpm |
| Ld4: | Yosondúa |
| Lc5: | mig |
| Ld5: | San Miguel el Grande |
| Lc6: | xtj |
| Ld6: | San Juan Teita |
| Lc7: | xtl |
| Ld7: | Tijaltepec |
| Lc8: | xti |
| Ld8: | Sinicahua |
| Lc9: | xtt |
| Ld9: | Tacahua (Yolotepec) |
| Glotto: | west2824 |
| Glottoname: | partial match |
| Glottorefname: | Western Alta Mixtec |
Atatláhuca–San Miguel Mixtec is a diverse Mixtec language of Oaxaca.
Egland & Bartholomew[1] found six dialects (with > ≈80% internal intelligibility) which had about 70% mutual intelligibility with each other:
Ethnologue notes that two additional varieties Egland & Bartholomew had not looked at, Sinicahua [xti] and Tijaltepec [xtl], are about as similar.