104

104 may refer to:

• 104 (number), a natural number
• AD 104, a year in the 2nd century AD
• 104 BC, a year in the 2nd century BC
• 104 (MBTA bus), Massachusetts Bay Transportation Authority bus route
• Hundred and Four (or Council of 104), a Carthaginian tribunal of judges
• 104 (City of Edinburgh) Field Squadron, Royal Engineers, a Scottish military unit
• 104 (Tyne) Army Engineer Regiment, Royal Engineers, an English military unit
• 104 (barge), cargo ship in service in the 1890s
• 104 Klymene, a main-belt asteroid
• Peugeot 104, a supermini car
• Italian Disability Law 104/1992

• 10/4 (disambiguation)
• Rutherfordium, chemical element with atomic number 104
• One-O-Four, model of automobile manufactured by the Daimler Motor Company