∆

∆ (Unicode character U+2206 ∆ INCREMENT) may refer to:

• Delta (letter) (Δ), a Greek letter also used in mathematics and computer science
• Delta baryon (Δ), one of several baryons consisting of up and down quarks
• alt-J (Δ), a British indie band
• Laplace operator (Δ), a differential operator
• Increment operator (∆)
• Symmetric difference, in mathematics, the set of elements which are in either of two sets and not in their intersection
• Triangle (△), one of the basic shapes in geometry