Terengganu (Malay pronunciation: [tərəŋɡanu]; Terengganu Malay: Tranung, Jawi: ترڠݢانو‎), formerly spelled Trengganu or Tringganu, is a sultanate and federal state of Malaysia. The state is also known by its Arabic honorific, Dāru l-Īmān ("Abode of Faith"). The coastal city of Kuala Terengganu, which stands at the mouth of the broad Terengganu River, is both the state and royal capital as well as the largest city in Terengganu. Other major cities and towns includes Jerteh, Kuala Dungun, Chukai, Kuala Berang, Marang, and Permaisuri. At 13,035 square kilometres in size and a population of around 1.14 million people, Terengganu is Malaysia's 7th largest state by area and 10th largest in population. Terengganu, along with Kelantan, Perlis and the Federal Territory of Putrajaya is one of the most homogeneous states/territories in the country of which 95% of the population are ethnic Malay-Muslims with its own distinct language/dialect, culture, history and tradition.

Located on the East Coast region of Peninsular Malaysia, Terengganu borders with the state of Kelantan to the north and Pahang to the west and south while to the east of Terengganu is the South China Sea. Terengganu is geographically divided into sparsely populated and mountainous inland (known as Terengganu Highlands of which the highest point is Mount Lawit at 1,519 metres) that spans from the border with Kelantan to Kemaman district and largely flat coastal plains of which most of the state's 1.1 million people are concentrated. The state is known for having the longest coastline in west Malaysia and achieved the Malaysian Book of Records for having the cleanest beach in the country.[5] Many of the most popular islands in Malaysia are located in the state of Terengganu such as Perhentian, Kapas and Redang islands as well as Bidong Island which was once a refuge to tens of thousands of Vietnamese refugees in the 1970s.