- complete system of residues
- complete tensor product
- complete ternary tree
- complete theory
- complete topological group
- complete topological space
- complete topology
- complete trajectory
- complete tree
- complete trigonometric sum
- complete tripartite graph
- complete type
- complete uniform space
- complete upper semi-lattice
- complete valuation
- complete variation
- complete variation of a function
- complete variation of signed measure
- complete variety
- complete vector field
- complete vector lattice
- complete vector space
- complete wave operator
- complete wreath product
- completing the square