IYV is the brand name used by Inyen Vina Co., Ltd., a Korean-owned guitar manufacturer based in Ho Chi Minh City, Vietnam. The factory produces electric guitars, bass guitars, and acoustic instruments, and has long operated as an OEM builder supplying bodies, necks, and finished guitars to other brands before developing its own IYV-branded line. The instruments are distributed in the United States under the IYV USA name and are commonly sold through Amazon and independent dealers.

The IYV catalog consists largely of affordable takes on classic shapes, including Strat- and Tele-style solid-bodies, Les Paul-style singlecuts, PRS-style carved-tops and semi-hollows such as the IPF-300, SG-style doublecuts, offset designs, and a range of four- and five-string basses. Guitars are typically built with mahogany, maple, and jatoba, with features like flame or quilt maple tops, abalone and vine inlays, and set-neck construction appearing across the line.

IYV has built a following among budget-minded players and modders, and the brand is frequently discussed on forums such as Squier-Talk and in dedicated Facebook groups as an inexpensive platform for upgrades and partscaster builds.

Inyen Vina (IYV) has 1 product cataloged on Equipboard, including Acoustic-Electric Guitars.