Triangulum is a northern constellation.
Triangulum may also refer to:
Astronomy Triangulum Minus, an obsolete constellation which is part of Triangulum Triangulum Australe, a small southern constellation Triangulum Australe (Chinese astronomy) Triangulum (Chinese astronomy) Triangulum Galaxy, a spiral galaxy visible in Triangulum Triangulum II, a dwarf galaxy companion of the Milky Way Galaxy
Other USS Triangulum (AK-102), a US Navy cargo ship The "Triangulum" story arc, an arc found in Shin Megami Tensei: Devil Survivor 2 Triangulum (species), species by the name 'triangulum'
See also Triangle (disambiguation)