Robustness is defined as "the ability of a to resist change without adapting its initial stable configuration". It may refer to:
- In biology
- Robustness (evolution), the persistence of a system’s characteristic behavior under perturbations or unusual or conditions of uncertainty. According to the kind of perturbation involved, it can be classified as mutational robustness, environmental robustness, etc
- Mutational robustness, the extent to which an organism's phenotype remains constant in spite of mutation
- Robustness (morphology)
- Robust control
- Robust optimization
- Robust decision, a decision that is as immune to uncertainty as is possible and looks good to all constituents long after it is made
- Robust decision making
- Robust statistics, a statistical technique that performs well even if its assumptions are somewhat violated by the true model from which the data were generated
- Robustness (computer science)
- Robustness (economics)