The 3Xtrim Aircraft Factory, or Zakłady Lotnicze 3Xtrim Sp.z o.o.in Polish, was an aircraft manufacturer located in the city of Bielsko-Biała, in southern Poland.

[1] The company was established by former SZD sailplane engineer Adam Kurbiel in 1996 under the name Wytwórnia i Naprawa Konstrukcji Lekkich - A.

[2] The company hired many of the out-of-work aerospace workers who had been employed at the sailplane manufacturer.

[1][3] 3Xtrim concentrated on the design and production of the 3X55 and 3X47 ultralight aircraft, which first flew in prototype form in 1996.

[1] The company name 3Xtrim was intended to be a double entendre, referring to the aircraft designs being "triple trimmed" (or more exactly "triple-tested") during the design, prototype and production stages and also that the aircraft are designed for "extreme conditions".