| Building Name: | Ptghnavank |
| Map Type: | Armenia |
| Map Size: | 275 |
| Location: | Ptghni, Kotayk Province, Armenia |
| Coordinates: | 40.2567°N 44.585°W |
| Religious Affiliation: | Armenian Apostolic Church |
| Architecture: | yes |
| Architecture Type: | Domed single-nave church |
| Architecture Style: | Armenian |
| Year Completed: | 6th or 7th century |
| Specifications: | yes |
| Dome Quantity: | 1 (collapsed) |
Ptghnavank (Armenian: Պտղնավանք) or Ptghni church (Պտղնիի տաճար) is located in the village of Ptghni in the Kotayk Province of Armenia.
The temple is a domed single-nave basilica type completed in the 6th or 7th century. Presently, the only surviving parts of the temple are most of the north wall, part of the south wall with one of the four impost arches of the dome, and some traces of the vaulting. The cupola and ceiling vaults, drum, and dome have since collapsed.
The church is noteworthy for its relief sculpture. Around the window casings, vegetal and geometric patterns may be found. Some restoration work had been done to the church in 1940.