Mariamjvari Strict Nature Reserve (Georgian: მარიამჯვრის სახელმწიფო ნაკრძალი) is a protected area in Sagarejo Municipality, Kakheti region of Georgia on the southern slopes of Gombori Range.

Mariamjvari Nature Reserve was founded in 1935 with the purpose of preserving untouched landscapes of relic Sosnowskyi pine (Pinus sosnowskyi).

Presently Mariamjvari Strict Nature Reserve is part of Georgia's Protected Areas which also includes Korugi Managed Reserve and Iori Managed Reserve.

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Most of the reserve landscape is covered in forest. It is represented by a variety of forms due to tree polymorphism.

• Scots pine