Type III

Type III or Type 3 may refer to:

• Type 3 Chi-Nu, a Japanese medium tank
• Type 3 mine, a Japanese land mine
• 8 cm/40 3rd Year Type naval gun, a Japanese weapon
• Type 3 12 cm AA Gun, a Japanese weapon
• Type 3 Chū-SAM, a Japanese medium-range surface-to-air missile
• Type 3 heavy machine gun, a Japanese heavy machine gun of World War I
• Type 3 aircraft machine gun, a Japanese aircraft machine gun of World War II

• Hyperlipoproteinemia type III, a risk factor for cardiovascular disease
• Nitric oxide synthase 3, an enzyme
• Type III intermediate filaments, structural proteins
• Type III secretion system used by pathogenic bacteria

• Type III von Neumann algebra
• Type III sums of squares, a measurement of the explanatory power of a variable after accounting for all other variables in the model in statistics
• Type III error, any of several proposed extensions to the concept of Type I and type II errors in statistics

• Type-III Civilization on the Kardashev scale, a way to classify civilizations
• British Railways Type 3 Diesel locomotives
• The Volkswagen Type 3
• Peugeot Type 3
• The IBM Type-III Library, a distribution mechanism for unsupported IBM mainframe software such as CP/CMS
• PostScript fonts Type 3, a format of Postscript fonts
• Motorola Type IIi Hybrid, a trunked radio system
• IEC 62196 Type 3 connector type (alias Plug Alliance)
• R-Type III: The Third Lightning, a video game
• IEC Type III, one of the four "type" classifications of audio cassette formulation
• Type-3 language in the Chomsky hierarchy of formal languages, a.k.a. regular language

• Class 3 (disambiguation)