Type III or Type 3 may refer to:
Japanese weapons 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
Biology and medicine 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 diabetes, alternative naming of Alzheimer's disease
Mathematics 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
Other 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 The Type III denim jacket Cooper 500, aka Cooper T3, a single seater racing car
See also Class 3 (disambiguation)