TBU may refer to:

• Vought TBU Sea Wolf, a U.S. World War II torpedo bomber
• Fua{{Okina}}amotu International Airport (IATA airport code) in Tonga
• Telephone balance unit, device to convert unbalanced to balanced audio signals
• Tirana Business University a university in Albania
• Tokushima Bunri University, in Tokushima, Japan
• Tomas Bata University in Zlín, Czech Republic

• Democratic Movement of Malagasy Renewal
• Democratic Movement of Serbia
• Democratic Movement (San Marino)
• Democratic mundialisation
• Democratic National Alliance (Bahamas)
• Democratic national convention
• Democratic National Convention, 1920
• Democratic National Convention, 2012
• Democratic National Convention in 1948
• Democratic National Initiative
• Democratic Nationalist Party
• Democratic Nationalist Party (1959–1966)
• Democratic Nationalist Party (disambiguation)
• Democratic Nationalist Party (Malta, 1921–1926)
• Democratic Nationalist Party (Malta, 1921–26)
• Democratic Nationalist Party (Malta, 1959–1966)
• Democratic Nationalist Party (Malta, 1959–66)
• Democratic Nationalist Party (Romania)
• Democratic National Party
• Democratic National Party (Cyprus)
• Democratic National Party (disambiguation)
• Democratic National Union Movement
• Democratic National Unity Movement
• Democratic Nyborg
• Democratico Centro