| Lowland Peruvian Quechua | |
| Nativename: | Chachapoyas–Lamas Quechua |
| States: | Peru |
| Speakers: | 22,000 |
| Date: | 2000–2003 |
| Ref: | e18 |
| Familycolor: | American |
| Fam1: | Quechuan |
| Fam2: | Quechua II |
| Fam3: | Northern |
| Lc1: | qvs |
| Ld1: | Lamas (San Martín) |
| Lc2: | quk |
| Ld2: | Chachapoyas |
| Lc3: | qup |
| Ld3: | Southern Pastaza Quechua |
| Glotto: | sanm1289 |
| Glottoname: | Lamas |
| Glottorefname: | San Martín Quechua |
| Glotto2: | chac1250 |
| Glottoname2: | Chachapoyas |
| Glottorefname2: | Chachapoyas Quechua |
| Glotto3: | sout2990 |
| Glottoname3: | Southern Pastaza Quechua |
Lowland Peruvian Quechua, or Chachapoyas–Lamas Quechua, are Quechuan languages spoken in the lowlands of northern Peru. The two principal varieties are:
Few children are learning Chachapoyas Quechua. Conila is said to be the last village where children are able to speak it.
Lowland Peruvian Quechua is similar in pronunciation to some of the Ecuadorian Kichwa language varieties. It is much more conservative, however, in its morphology. For example, it has retained the inclusive/exclusive distinction for "we", which has been lost in all of the Ecuadorian Quechuan languages.