The word decidable may refer to:
Decidable language Decidability (logic) for the equivalent in mathematical logic Decidable problem and Undecidable problem Gödel's incompleteness theorem, a theorem on the undecidability of languages consisting of "true statements" in mathematical logic. Recursive set, a "decidable set" in recursion theory
See also Decision problem List of undecidable problems Decision (disambiguation) Decide (disambiguation)