I4, i4, I 4 or I-4 may refer to:
Arts, entertainment, and media
* ''
I-4: Loafing and Camouflage'', a Greek film
Military
*
1st Life Grenadier Regiment (Sweden)
The 1st Life Grenadier Regiment (), designation I 4, was a Swedish Army infantry regiment that traced its origins back to the 16th century. It was merged into a new regiment in 1927. The regiment's soldiers were recruited from the province of Ö ...
(1816–1927), a Swedish infantry regiment
* , a World War II Type J1 submarine of the Imperial Japanese Navy
*
Life Grenadier Regiment (Sweden)
The Life Grenadier Regiment (), designations I 4 and I 4/Fo 41, was a Swedish Army infantry regiment that traced its origins back to the 16th century. It was disbanded in 1997. The regiment's soldiers were originally recruited from the provinces ...
(1928–1997), a Swedish infantry regiment
*
Tupolev I-4
The Tupolev I-4 was a Soviet sesquiplane single-seat fighter. It was conceived in 1927 by Pavel Sukhoi as his first aircraft design for the Tupolev design bureau, and was the first Soviet all-metal fighter.
Design and development
After the fi ...
, a 1927 Soviet aircraft
Science and technology
*
I-4 satellite
The Inmarsat-4 satellites, or I-4 satellites are a satellite constellation operated by Inmarsat. They provide the Inmarsat BGAN, FleetBroadband, and SwiftBroadband communications networks. They operate on the L band everywhere on Earth
...
* i4, an integer in
XML-RPC
XML-RPC is a remote procedure call (RPC) protocol which uses XML to encode its calls and HTTP as a transport mechanism.Simon St. Laurent, Joe Johnston, Edd Dumbill. (June 2001) ''Programming Web Services with XML-RPC.'' O'Reilly. First Edition. ...
*
Industrie 4.0, the fourth Industrial Revolution
Transportation
*
I4 engine
A straight-four engine (also referred to as an inline-four engine) is a four-cylinder piston engine where cylinders are arranged in a line along a common crankshaft.
The majority of automotive four-cylinder engines use a straight-four layout ( ...
, a piston engine
*
Interstate 4
Interstate 4 (I-4) is an Interstate Highway System, Interstate Highway located entirely within the US state of Florida, maintained by the Florida Department of Transportation (FDOT). Spanning along a generally southwest–northeast axis ...
, an interstate highway in Florida
*
BMW i4
The BMW i4 (model code G26) is a battery electric compact executive car produced by BMW since 2021. It has a five-door liftback body style and is marketed as a four-door coupé. The initial concept version, named BMW i Vision Dynamics, debuted ...
, a German mid-size electric sedan
*
Interstate Airlines
Interstate Airlines was a charter airline based in Maastricht, Netherlands. It operates wet lease services within Europe. Its main base was Maastricht Aachen Airport.
There was also a U.S.-based Interstate Airlines which was a cargo air carrier ...
, by IATA airline designator
*
LB&SCR I4 class
The LBSCR I2 class was a class of 4-4-2 steam tank locomotives designed by D. E. Marsh for suburban passenger service on the London, Brighton and South Coast Railway. The I4 class were of the same design but incorporated a superheated boiler ...
, a British locomotive
See also
*
iPhone 4
The iPhone 4 is a smartphone that was developed and marketed by Apple Inc. It is the List of iPhone models, fourth generation of the iPhone lineup, succeeding the iPhone 3GS and preceding the iPhone 4s. Following a number of notable leaks, ...
, a smartphone
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4I (disambiguation)
{{Letter-Number Combination Disambiguation