Thema may refer to:
- Lancia Thema, an executive car produced by Italian automaker Lancia
- Theme or Thema, a Byzantine military-civilian province
- Thema (rapper), Italian rapper
- Thema , an electroacoustic composition by Luciano Berio
- Thema, a composition for bass saxophone & computer-generated tape by Horacio Vaggione
- Thema International Fund, an Irish investment fund
- Thema, a subsidiary of Canal+ Group
