| datatypeTypeKinded | Control.Lens.Internal.TH | 
| Deadlock_ | Control.Exception.Lens | 
| Deadlock__ | Control.Exception.Lens | 
| decimal | Numeric.Lens | 
| declareClassy | Control.Lens.TH, Control.Lens, Control.Lens.Combinators | 
| declareClassyFor | Control.Lens.TH, Control.Lens, Control.Lens.Combinators | 
| declareFields | Control.Lens.TH, Control.Lens, Control.Lens.Combinators | 
| declareLenses | Control.Lens.TH, Control.Lens, Control.Lens.Combinators | 
| declareLensesFor | Control.Lens.TH, Control.Lens, Control.Lens.Combinators | 
| declareLensesWith | Control.Lens.TH, Control.Lens, Control.Lens.Combinators | 
| declarePrisms | Control.Lens.TH, Control.Lens, Control.Lens.Combinators | 
| declareWrapped | Control.Lens.TH, Control.Lens, Control.Lens.Combinators | 
| deep | Control.Lens.Plated, Control.Lens, Control.Lens.Combinators | 
| Deepening |   | 
| 1 (Type/Class) | Control.Lens.Internal.Level, Control.Lens.Internal | 
| 2 (Data Constructor) | Control.Lens.Internal.Level, Control.Lens.Internal | 
| deepening | Control.Lens.Internal.Level, Control.Lens.Internal | 
| deepOf | Control.Lens.Traversal, Control.Lens, Control.Lens.Combinators | 
| defaultFieldRules | Control.Lens.TH, Control.Lens, Control.Lens.Combinators | 
| DefName | Control.Lens.Internal.FieldTH, Control.Lens.TH, Control.Lens, Control.Lens.Combinators | 
| Denormal_ | Control.Exception.Lens | 
| Deque | Control.Lens.Internal.Deque | 
| derivClauseCxt | Language.Haskell.TH.Lens | 
| derivClauseStrategy | Language.Haskell.TH.Lens | 
| description | System.IO.Error.Lens | 
| devoid | Control.Lens.Lens, Control.Lens, Control.Lens.Combinators | 
| dimap | Control.Lens.Iso, Control.Lens, Control.Lens.Combinators | 
| dimapping | Control.Lens.Iso, Control.Lens, Control.Lens.Combinators | 
| directory | System.FilePath.Lens | 
| distrib | Control.Lens.Internal.Indexed, Control.Lens.Internal, Control.Lens.Indexed, Control.Lens, Control.Lens.Combinators | 
| DivideByZero_ | Control.Exception.Lens | 
| dividing | Numeric.Lens | 
| dropping | Control.Lens.Traversal, Control.Lens, Control.Lens.Combinators | 
| droppingWhile | Control.Lens.Fold, Control.Lens, Control.Lens.Combinators | 
| Dynamic | Data.Dynamic.Lens |