K55 or K-55 may refer to:
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K-55 (Kansas highway)
K-55 is a west–east state highway in the U.S. state of Kansas. The highway's western terminus is at U.S. Route 81 (US-81) roughly north of Wellington and the eastern terminus is at K-15 in Udall. It passes through the city of Belle Pla ...
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K-55 (missile)
The Kaliningrad K-5 (NATO reporting name AA-1 ''Alkali''), also known as RS-1U or product ShM, was an early Soviet air-to-air missile.
History
The development of the K-5 began in 1951. The first test firings were in 1953. It was tested (but not ...
, a Soviet air-to-air missile
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K55 howitzer
The M109 is an American 155 mm turreted self-propelled howitzer, first introduced in the early 1960s to replace the M44. It has been upgraded a number of times, most recently to the M109A7. The M109 family is the most common Western indirect-fi ...
, a South Korean self-propelled gun
* , a corvette of the Royal Navy
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Keystone K-55 Pronto
The Keystone K-55 Pronto was a mail plane developed in the United States in the late 1920s.
Design and development
The Pronto was a conventional single-bay, unequal-span biplane design with slightly staggered wings. The pilot sat in an open c ...
, an American biplane
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Osan Air Base, in South Korea
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Potassium-55
Potassium () has 26 known isotopes from to , with the exception of still-unknown , as well as an unconfirmed report of . Three of those isotopes occur naturally: the two stable forms (93.3%) and (6.7%), and a very long-lived radioisotope (0.0 ...
, an isotope of potassium
* , various vessels
* K-55, a
Billiard table profile
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