Juniperus standleyi is a species of juniper native to Guatemala and the adjacent extreme southeast of Mexico (Volcán Tacaná in Chiapas), where it occurs at elevations of 3,000–4,250 metres (9,840–13,940 feet).

[1] Juniperus standleyi is an evergreen coniferous shrub or small to medium-sized tree growing to 5–15 metres (16–49 feet), rarely 20 m, in height.

The leaves are of two forms, juvenile needle-like leaves 5–7 millimetres long on seedlings and occasionally (as regrowth after browsing damage) on adult plants, and adult scale-leaves 1–1.5 mm long on older plants; they are arranged in decussate opposite pairs or whorls of three.

The cones are globose, berry-like, 6–9 mm in diameter, blue-black with a thin pale waxy coating, and contain three to six seeds; they are mature in about 18 months.

[2][3] Juniperus standleyi is threatened by habitat loss and illegal cutting for fuelwood.