K1

K1, K.I, K01, K 1 or K-1 can refer to:

Geography

Denel K1, a South African mortar
Daewoo Precision Industries K1, a carbine of the South Korean army
EMER K-1, a Burmese assault rifle designated EMERK
Fokker K.I, a World War I German experimental aircraft
Kucher Model K1, a Hungarian submachine gun
HMS K1, a World War I British submarine
HMS Acanthus (K01) / HNoMS Andenes (K01), a 1939 British, then Norwegian Flower-class corvette
K1 tank, or Type 88 tank, a modern main battle tank of the South Korean military
K-1 cart a United States Signal Corps cart for carrying signal equipment
K 1, a designation for a Swedish cavalry regiment
K1-class gunboat, planned World War II German gunboat
K1, a World War II Dutch sloop operated by the German Navy
Skoda K-1, of the Skoda K series, a World War II Czechoslovak howitzer
USS K-1 (SS-32), a 1913 United States Navy K class of submarine
K-1 Airfield, former name of the Gimhae Air Base
Soviet submarine K-1
IVL K.1 Kurki, a Finnish trainer aircraft

An abbreviation of Keiichi Morisato, a character in the manga/anime Oh My Goddess!
First name of Keiichi Maebara, a character in Higurashi When They Cry franchise
K1, a nickname given to Kyler Murray (born 1997), American football quarterback
kwn (born 2000), formerly known as k1, British singer and rapper

Furness Railway K1, a steam locomotive class related to the Furness Railway K2
GSR Class K1, a Great Southern Railway Irish steam locomotive
LNER Thompson/Peppercorn Class K1, a 1949 British 2-6-0 (mogul) steam locomotive class
LNER Class K1, a class of British steam locomotives
NCC Class K1, a Northern Counties Committee Irish steam locomotive
PRR K1, a Pennsylvania Railroad locomotive classification
SR K1 class, a British 2-6-0 steam locomotive
the first 1909 Tasmanian Government Railways K class Garratt, a type of articulated steam locomotive

K1 Britannia, the replica of His Majesty's Yacht Britannia built in 1893 for Commodore Albert Edward, Prince of Wales
The class/racing number on HMY Britannia's main sail
K1, (single kayak) a canoe racing event under the International Canoe Federation

K-1 visa, a United States immigration visa (also called the fiancé(e) visa)
Schedule K-1, a tax form of the United States Internal Revenue Service (IRS) corresponding with Form 1065 to report one's share of income in a flow-through entity

K. 1 can designate:

six works by Wolfgang Amadeus Mozart:
- K. 1a, an Andante in C for Keyboard
- K. 1b, an Allegro in C for Keyboard
- K. 1c, an Allegro in F for Keyboard
- K. 1d, a Minuet in F for Keyboard
- K. 1e, a Minuet in G for Keyboard
- K. 1f, a Minuet in C for Keyboard
Kk. 1 or K. 1, a sonata for keyboard by Scarlatti; see List of solo keyboard sonatas by Domenico Scarlatti
Kay One (born 1984), German rapper
Kingz One, a music group created in 2003
K1, an album by Kmoe

Family K1, a set of New Testament manuscripts
K1 or K-1, an abbreviation for kerosene heating fuel
K1, a Larcum Kendall marine chronometer (1769)
K-1, a kickboxing promotion
Haplogroup LT or K1, a Y-chromosome DNA haplogroup
K1, an alternative title for Kommune 1
k1, a coefficient that encapsulates process-related factors, limiting the minimum feature size in photolithography
K1 fund, a suspected German Ponzi-scheme
an abbreviation for KotOR 1
K₁, a common name for the vitamin phylloquinone