Trapezium, plural trapeziums or trapezia, may refer to:

• Trapezium, in British and other forms of English, a trapezoid, a quadrilateral that has exactly one pair of parallel sides

• Trapezium, in North American English, an irregular quadrilateral with no sides parallel

• Trapezium (bivalve), a genus of molluscs in the family Trapezidae

• Trapezium (bone), a bone in the hand

• Trapezia (crab), a genus of crabs

• Trapezium (novel), a Japanese novel by Kazumi Takayama

• The Trapezium, football ground, home of Wednesbury Strollers F.C.

See also

• Trapezius, a muscle in the upper torso and neck

• Trapezium Cluster, a group of stars in the Orion Nebula