Hasa may refer to: * Hasa (Korean military), a rank in the Korean military * Hasa, Al Madinah, Saudi Arabia * Hearing and Speech Agency of Baltimore * Hasa of Eshtemoa (3rd–4th century CE), Jewish scholar * Hasa oasis, a historical region now in Saudi Arabia * Has-a, a relationship between objects in object-oriented programming * Hasa, Jordan, a village in Jordan * Wadi al-Hasa, also called Wadi Hasa, a wadi in Jordan

See also