JB or J.B. may refer to:
JBJ (Hangul: 제이비제이) was a South Korean project boy band consisting of six members who previously participated in Mnet's 2017 survival show Produce 101 Season 2. The group was managed by Fave Entertainment, while CJ E&M oversaw the group's release production.
Lim Jae-beom (Hangul: 임재범; born January 6, 1994) commonly known by his stage name JB (Hangul: 제이비), is a South Korean singer, songwriter and actor.
JBG SMITH Properties is a publicly traded real estate investment trust based in Chevy Chase, Maryland.
JB Carlson (born February 1974) is an American founder, businessman, social entrepreneur, CEO, and Executive Director.
JBS S.A. is a Brazilian company that is the largest (by sales) meat processing company in the world, producing factory processed beef, chicken and pork, and also selling by-products from the processing of these meats.
JBS USA Holdings, Inc. is an American food processing company and a wholly owned subsidiary of JBS S.A.
Jean-Benoît Blanc () is a French-British actor, director and voice-over artist who has worked on a number of cartoons, anime, and video games produced in the Los Angeles area.
In Congo folklore, the jba fofi or j'ba fofi (Baka: "giant spider"), also known as the Congolese giant spider, is a creature said to exist in the Congo, possibly representing a new species of arachnid.