J.Y. Company (Chinese: 晶太) or simply JY, was a publisher of various bootleg games, most notably Famicom games. They are best known for publishing many of Hummer Team's games. They appear to have been active from at least 1989 to possibly the mid 2000s.

J.Y. Company is mostly known for publishing Famicom ports that were developed by Hummer Team and Ei-How Yang. These ports are often regarded as being higher quality than most other bootleg Famicom ports. Many of these ports are often released with an extra hack of itself, usually on the same PCB as the original game.

They also made a lot of multicarts, the most common are the 4 in 1. Some had more or less games but almost all of their multis don't have repeats. As well as this, many of them include late NES/Famicom releases rarely found on other multicarts such as Rainbow Islands and Mitsume Ga Tooru.

J.Y. Company hardly ever hacked other publisher's titles. From 1994 to 1998, only two titles they weren't responsible for appeared on their multicarts: Super Donkey Kong 2 and Master Fighter II.

Often in their games, there's a screen containing their logo that can be accessed through a cheat code. Their logo may occasionally show up in the background of certain games as well.