Yerevan Botanical Garden, Botanical garden in Avan district, Yerevan, Armenia.

Yerevan Botanical Garden is a facility with collections of trees and rare plant species from Armenia, cultivated across expansive grounds at higher elevation. Temperature-controlled greenhouses shelter tropical and subtropical plants plus succulents for visitors to explore.

The garden opened in 1935 in Yerevan's north-eastern Avan district; the Institute of Botany followed in 1938, and a 25 m² greenhouse in 1939. A 610 m² greenhouse was built in 1944. Between 1954 and 1970, botanists L.B. Makhatadse and A.O. Mkrtchyan assembled a Caucasian flora collection covering about 16 hectares. After 1991, funding collapsed, and during the 1992–1995 energy crisis many trees were cut for fuel.

The garden's rose collection is named Rosarium Helveticum after Switzerland, whose embassy funded the 2,000-square-metre rose plot in 2011. It now holds 27 rose varieties in groups such as tea-hybrid, polyantha, floribunda, park and climbing roses, all wintering under deep mulch.

The garden is accessible on foot and has marked paths through various sections for walking. Allow time to see both outdoor areas and the interior greenhouses.

The garden holds 16 models of Armenian plant communities on about 4 hectares, including groupings now on the verge of disappearing in the wild, such as sand, salt-marsh, shiblyak and water-marsh stands. A separate plot keeps some 200 species of wild relatives of cultivated plants from 30 genera.