Kalba (Arabic: كلباء‎) is a town in the United Arab Emirates. It is an exclave of the emirate of Sharjah lying on the Gulf of Oman coast north of Oman and south of the emirate of Fujairah. Khor Kalba (Kalba Creek), an important nature reserve and mangrove swamp, is located south of the town by the Omani border. The town was captured by the Portuguese Empire in the 16th century and was referred to as Ghallah.