Type 91 (Disambiguation)

Japanese Imperial Year 2591 (1931) or Gregorian year 1991, Type 91 may refer to:

Armaments

Machine Guns

• Type 91 (6.5 mm)

Torpedoes

• Type 91 aerial torpedo Model 2
• Type 91 aerial torpedo Model 3

Missiles

• Type 91 surface-to-air missile