An enantioselective fluorination of 3‐functionalized oxindoles using electron‐rich amino urea catalyst is described. Various 3‐functionalized 3‐fluoro‐2‐oxindoles were obtained in good yields and enantio‐selectivity. The resulting enantioenriched 3‐methylene nitrile 3‐fluoro‐2‐oxindole product was found to inhibit indoleamine 2,3‐dioxygenase considerably.