Kanthaya may refer to:

• Kanthaya, Banmauk -Burma
• Kanthaya, Okpho-Burma

• National Theatre of Strasbourg
• National Theatre of São Carlos
• National Theatre of Venezuela
• National Theatre, Prague
• National Theatre Workshop of the Handicapped
• National Thermal Power Corporation
• National Thermal Power Corporation (India)
• Nationaltidende
• National Tidende
• National Tire & Battery
• National Title
• National Tom Sawyer Days
• National Tonga Day
• National Torch Movement
• National Tourist Routes in Norway
• National tourist site
• National Toy Train Museum
• National Trade Certificate
• National Trade Certificate Foundation
• National Trade Certificate Foundation Course
• National Trade Certificate I
• National Trade Certificate II
• National Trade Certificate III
• National Trade Union Council (Japan)
• National Trading Limited