How many islands start with the letter t?

Tennessee and Texas are the U.S. states that start with the letter T. Tasmania is a state in Australia. Tyrol is a state in Austria. Tocantins is a state in Brazil. Thuringia is a state in Germany. Tamil Nadu; Telangana; and Tripura are states in India. Terengganu is a state in Malaysia. Tabasco; Tamaulipas; and Tlaxcala are states in Mexico. Taraba is a state in Nigeria. Tachira and Trujillo are states in Venezuela.