Question: Most number of national awards for best actress?
Disambiguated questions and answers: question: Actress who has won the most number of national awards for best actress?
What is the most number of national awards for best actress won be a single actress?
Films in what language have won the most number of national awards for best actress?
answer: Azmi
Shabana Azmi
5
Hindi
Natural Questions answer: Shabana Azmi (from the Wikipedia article "National Film Award for Best Actress")