OTK may refer to:
;Organisations
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Austrian Tourist Club
The Austrian Tourist Club () or ÖTK is the second oldest and third largest Alpine club in Austria.
The foundation of the club goes back to an initiative by Gustav Jäger, publisher of ''Der Tourist'', the first tourist magazine in Austria. In co ...
(German: or ÖTK)
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Obrona Terytorium Kraju
The Territorial Defense Forces () was an armed force responsible for the internal security of Poland and separate from the Polish Army. The OTK existed from 1965 until 2008. As initially organized, OTK forces included both an " Internal Defense F ...
(ISO 639:otk), territorial defense forces of Poland
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Obchodní tiskárny Kolín
Obchodní tiskárny Kolín or OTK, today known as OTK Group, a.s. or OTK printing & packaging a.s., is a Czech printing firm based in Kolín founded in 1879. Today it produces a wide range of paper and card products including labels, and packagi ...
, Czech paper and card manufacturers
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One True King
One True King (OTK) known legally as OTK Media, Inc., is an American media organization based in Austin, Texas. The organization primarily focuses on online content creation and has previously competed professionally in ''World of Warcraft''.
Hi ...
, a gaming organization based in Austin, Texas
;Other meanings
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Technical Control Department
In economy of the Soviet Union and economy of Russia, Technical Control Departments (, OTK) were and are in charge of quality assurance of production and services.''Large Encyclopedic Dictionary'', vol. 2, Moscow, 1991, article "Отдел техн ...
(Russian: or ОТК)
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Old Turkic
Old Siberian Turkic, generally known as East Old Turkic and often shortened to Old Turkic, was a Siberian Turkic language spoken around East Turkistan and Mongolia. It was first discovered in inscriptions originating from the Second Turkic Kh ...
(language code)
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One time key
The one-time pad (OTP) is an encryption technique that cannot be cracked in cryptography. It requires the use of a single-use pre-shared key that is larger than or equal to the size of the message being sent. In this technique, a plaintext is ...
, a method related to encryption
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Otakuthon
Otakuthon is a Canadian anime convention promoting Japanese animation (anime), Japanese graphic novels (manga), related gaming and Japanese pop-culture (music, cinema, television). It is held annually for 3 days in downtown Montreal during a ...
, Montreal's anime convention
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Ottakring
Ottakring () is the 16th Districts of Vienna, District in the city of Vienna, Austria (). It is located west of the central districts, north of Penzing (Vienna), Penzing and south of Hernals. Ottakring has some heavily populated urban areas with m ...
, the 16th municipal district of Vienna
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Over-the-knee boot
Over-the-knee boots (or cuissardes, which include thighboots, top boots, hip-boots, and waders), ''OTK boots'', are long boots that fully or partly cover the knee. Originally created as a man's riding boot in the 15th century, in the latter part ...
s ("OTK boots")
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