Del squared may refer to:

• Laplace operator, a differential operator often denoted by the symbol ∇²
• Hessian matrix, sometimes denoted by ∇²
• Aitken's delta-squared process, a numerical analysis technique used for accelerating the rate of convergence of a sequence

See also

• DEL2, the second tier ice hockey league in Germany
• Del, a vector calculus differential operator
• Nabla symbol, the symbol used for the Del operator
• ∂, the partial derivative operator symbol
• Del (disambiguation)