120 may refer to:

• 120 (number), the number
• AD 120, a year in the 2nd century AD
• 120 BC, a year in the 2nd century BC
• 120 film, a film format for still photography
• 120 (film), a 2008 film
• 120 (MBTA bus)
• 120 (New Jersey bus)
• 120 (Kent) Construction Regiment, Royal Engineers
• 120 volts, standard electrical mains voltage in several countries in the Americas
• Lenovo IdeaPad 120, a discontinued brand of notebook computers
• Ching Chung stop (MTR digital station code 120), a Light Rail stop in Tuen Mun, Hong Kong
• 120 Lachesis, a main-belt asteroid

1/20 may refer to:

• January 20 (month-day date notation)