Hasa

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
 * Highly accelerated stress audit, a test method to find electronic product defects