San Juanico Bridge in the context of Santa Rita, Samar

Samar, officially the Province of Samar (Waray: Probinsya han Samar; Tagalog: Lalawigan ng Samar), or also known as Western Samar, is a province in the Philippines located in the Eastern Visayas region. Its capital is the city of Catbalogan while Calbayog is the most populous city in the province. It is bordered by Northern Samar, Eastern Samar, Leyte and Leyte Gulf, and includes several islands in the Samar Sea. Samar is connected to the island of Leyte via the San Juanico Bridge.

In 1768, Leyte and modern Samar were created out of the historical province of Samar. In 1965, Northern and Eastern Samar were created.

Eastern Visayas (Waray: Sinirangan Kabisay-an; Cebuano: Sidlakang Kabisay-an; Tagalog: Silangang Kabisayaan; Filipino: Silangang Visayas), designated as Region VIII, is an administrative region in the Philippines. It consists of three main islands: Samar, Leyte, and Biliran. The region has six provinces: Biliran, Leyte, Northern Samar, Samar, Eastern Samar, Southern Leyte, one independent city, Ormoc, and one highly urbanized city, Tacloban (its regional center and largest city). The highly urbanized city of Tacloban is the sole regional center. These provinces and cities occupy the easternmost islands of the Visayas group of islands, hence the region's name.

Eastern Visayas faces the Philippine Sea to the east. The region's most famous landmark is the San Juanico Bridge, which links the islands of Samar and Leyte. As of 2020, the Eastern Visayas region has a population of 4,547,150 inhabitants, making it the least populous region in the Visayas.

The Cebu–Cordova Link Expressway (CCLEX), also known as the Cebu–Cordova Bridge and the Third Cebu–Mactan Bridge (or simply, the Third Bridge), is an 8.9-kilometer (5.5 mi) toll bridge expressway in Metro Cebu, Philippines. The bridge connects the South Road Properties in Cebu City in mainland Cebu and Cordova on Mactan island. Crossing the Mactan Channel, the bridge is the third road link between Cebu and Mactan islands and the first between Cebu City and Cordova. It is the longest sea-crossing bridge in the Philippines, surpassing the 2-kilometer (1.2 mi) San Juanico Bridge between Samar and Leyte, as well as Marcelo Fernan Bridge (which also crosses the Mactan Channel) as the longest cable-stayed bridge in the Philippines. It also surpassed the 5-kilometer (3.1 mi) Candaba Viaduct of North Luzon Expressway (NLEX) connecting the provinces of Pampanga and Bulacan for being the longest bridge in the Philippines upon its completion on October 5, 2021.

San Juanico Strait (Waray: Sulang han San Juanico) is a narrow strait in the Eastern Visayan region in the Philippines. It separates the islands of Samar and Leyte and connects Carigara Bay (Samar Sea) with the San Pedro Bay (Leyte Gulf). It is about 38 kilometres (24 mi) long. At its narrowest point, the strait is only 2 kilometers (1.2 mi) wide.

The strait is crossed by the San Juanico Bridge. The HVDC Leyte–Luzon power line also crosses the strait through an overhead line at 11°23′36″N 124°59′04″E / 11.39333°N 124.98444°E / 11.39333; 124.98444, using a tower on an uninhabited island in the strait. The Tacloban City harbor, the main port of the Eastern Visayas, is on Cancabato Bay at the southern entrance of the strait.